From 51f3d02b980a338cd291d2bc7629cdfb2568424b Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 5 Nov 2014 16:46:40 -0500 Subject: net: Add and use skb_copy_datagram_msg() helper. This encapsulates all of the skb_copy_datagram_iovec() callers with call argument signature "skb, offset, msghdr->msg_iov, length". When we move to iov_iters in the networking, the iov_iter object will sit in the msghdr. Having a helper like this means there will be less places to touch during that transformation. Based upon descriptions and patch from Al Viro. Signed-off-by: David S. Miller --- net/ipv6/datagram.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/ipv6/datagram.c') diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 2cdc38338be3..5c6996e44b14 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -351,7 +351,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) msg->msg_flags |= MSG_TRUNC; copied = len; } - err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); + err = skb_copy_datagram_msg(skb, 0, msg, copied); if (err) goto out_free_skb; @@ -445,7 +445,7 @@ int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len, msg->msg_flags |= MSG_TRUNC; copied = len; } - err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); + err = skb_copy_datagram_msg(skb, 0, msg, copied); if (err) goto out_free_skb; -- cgit v1.2.3 From ba7a46f16dd29f93303daeb1fee8af316c5a07f4 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 11 Nov 2014 10:59:17 -0800 Subject: net: Convert LIMIT_NETDEBUG to net_dbg_ratelimited Use the more common dynamic_debug capable net_dbg_ratelimited and remove the LIMIT_NETDEBUG macro. All messages are still ratelimited. Some KERN_ uses are changed to KERN_DEBUG. This may have some negative impact on messages that were emitted at KERN_INFO that are not not enabled at all unless DEBUG is defined or dynamic_debug is enabled. Even so, these messages are now _not_ emitted by default. This also eliminates the use of the net_msg_warn sysctl "/proc/sys/net/core/warnings". For backward compatibility, the sysctl is not removed, but it has no function. The extern declaration of net_msg_warn is removed from sock.h and made static in net/core/sysctl_net_core.c Miscellanea: o Update the sysctl documentation o Remove the embedded uses of pr_fmt o Coalesce format fragments o Realign arguments Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- Documentation/sysctl/net.txt | 12 ++++++++---- include/net/sock.h | 7 ------- include/net/udplite.h | 6 +++--- net/core/sysctl_net_core.c | 2 ++ net/core/utils.c | 3 --- net/ipv4/icmp.c | 8 ++++---- net/ipv4/inet_fragment.c | 2 +- net/ipv4/ip_fragment.c | 3 +-- net/ipv4/tcp_input.c | 8 ++++---- net/ipv4/tcp_timer.c | 18 ++++++++++-------- net/ipv4/udp.c | 30 +++++++++++++++--------------- net/ipv6/addrconf.c | 6 ++---- net/ipv6/ah6.c | 7 +++---- net/ipv6/datagram.c | 4 ++-- net/ipv6/esp6.c | 4 ++-- net/ipv6/exthdrs.c | 18 +++++++++--------- net/ipv6/icmp.c | 15 +++++++-------- net/ipv6/mip6.c | 11 ++++++----- net/ipv6/netfilter.c | 2 +- net/ipv6/udp.c | 31 +++++++++++++------------------ net/phonet/af_phonet.c | 9 +++++---- net/phonet/pep-gprs.c | 3 +-- net/phonet/pep.c | 12 ++++++------ 23 files changed, 105 insertions(+), 116 deletions(-) (limited to 'net/ipv6/datagram.c') diff --git a/Documentation/sysctl/net.txt b/Documentation/sysctl/net.txt index 04892b821157..e26c607468a6 100644 --- a/Documentation/sysctl/net.txt +++ b/Documentation/sysctl/net.txt @@ -120,10 +120,14 @@ seconds. warnings -------- -This controls console messages from the networking stack that can occur because -of problems on the network like duplicate address or bad checksums. Normally, -this should be enabled, but if the problem persists the messages can be -disabled. +This sysctl is now unused. + +This was used to control console messages from the networking stack that +occur because of problems on the network like duplicate address or bad +checksums. + +These messages are now emitted at KERN_DEBUG and can generally be enabled +and controlled by the dynamic_debug facility. netdev_budget ------------- diff --git a/include/net/sock.h b/include/net/sock.h index 7789b59c0c40..83a669f83bae 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2288,13 +2288,6 @@ bool sk_ns_capable(const struct sock *sk, bool sk_capable(const struct sock *sk, int cap); bool sk_net_capable(const struct sock *sk, int cap); -/* - * Enable debug/info messages - */ -extern int net_msg_warn; -#define LIMIT_NETDEBUG(fmt, args...) \ - do { if (net_msg_warn && net_ratelimit()) printk(fmt,##args); } while(0) - extern __u32 sysctl_wmem_max; extern __u32 sysctl_rmem_max; diff --git a/include/net/udplite.h b/include/net/udplite.h index 2caadabcd07b..9a28a5179400 100644 --- a/include/net/udplite.h +++ b/include/net/udplite.h @@ -40,7 +40,7 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh) * checksum. UDP-Lite (like IPv6) mandates checksums, hence packets * with a zero checksum field are illegal. */ if (uh->check == 0) { - LIMIT_NETDEBUG(KERN_DEBUG "UDPLite: zeroed checksum field\n"); + net_dbg_ratelimited("UDPLite: zeroed checksum field\n"); return 1; } @@ -52,8 +52,8 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh) /* * Coverage length violates RFC 3828: log and discard silently. */ - LIMIT_NETDEBUG(KERN_DEBUG "UDPLite: bad csum coverage %d/%d\n", - cscov, skb->len); + net_dbg_ratelimited("UDPLite: bad csum coverage %d/%d\n", + cscov, skb->len); return 1; } else if (cscov < skb->len) { diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index cf9cd13509a7..f93f092fe226 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -26,6 +26,8 @@ static int zero = 0; static int one = 1; static int ushort_max = USHRT_MAX; +static int net_msg_warn; /* Unused, but still a sysctl */ + #ifdef CONFIG_RPS static int rps_sock_flow_sysctl(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) diff --git a/net/core/utils.c b/net/core/utils.c index efc76dd9dcd1..7b803884c162 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -33,9 +33,6 @@ #include #include -int net_msg_warn __read_mostly = 1; -EXPORT_SYMBOL(net_msg_warn); - DEFINE_RATELIMIT_STATE(net_ratelimit_state, 5 * HZ, 10); /* * All net warning printk()s should be guarded by this function. diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 5882f584910e..36b7bfa609d6 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -784,8 +784,8 @@ static void icmp_unreach(struct sk_buff *skb) */ switch (net->ipv4.sysctl_ip_no_pmtu_disc) { default: - LIMIT_NETDEBUG(KERN_INFO pr_fmt("%pI4: fragmentation needed and DF set\n"), - &iph->daddr); + net_dbg_ratelimited("%pI4: fragmentation needed and DF set\n", + &iph->daddr); break; case 2: goto out; @@ -798,8 +798,8 @@ static void icmp_unreach(struct sk_buff *skb) } break; case ICMP_SR_FAILED: - LIMIT_NETDEBUG(KERN_INFO pr_fmt("%pI4: Source Route Failed\n"), - &iph->daddr); + net_dbg_ratelimited("%pI4: Source Route Failed\n", + &iph->daddr); break; default: break; diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 19419b60cb37..e7920352646a 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -458,6 +458,6 @@ void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q, ". Dropping fragment.\n"; if (PTR_ERR(q) == -ENOBUFS) - LIMIT_NETDEBUG(KERN_WARNING "%s%s", prefix, msg); + net_dbg_ratelimited("%s%s", prefix, msg); } EXPORT_SYMBOL(inet_frag_maybe_warn_overflow); diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 4d964dadd655..e5b6d0ddcb58 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -618,8 +618,7 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev, return 0; out_nomem: - LIMIT_NETDEBUG(KERN_ERR pr_fmt("queue_glue: no memory for gluing queue %p\n"), - qp); + net_dbg_ratelimited("queue_glue: no memory for gluing queue %p\n", qp); err = -ENOMEM; goto out_fail; out_oversize: diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 5f979c7f5135..d91436ba17ea 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5854,12 +5854,12 @@ static inline void pr_drop_req(struct request_sock *req, __u16 port, int family) struct inet_request_sock *ireq = inet_rsk(req); if (family == AF_INET) - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("drop open request from %pI4/%u\n"), - &ireq->ir_rmt_addr, port); + net_dbg_ratelimited("drop open request from %pI4/%u\n", + &ireq->ir_rmt_addr, port); #if IS_ENABLED(CONFIG_IPV6) else if (family == AF_INET6) - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("drop open request from %pI6/%u\n"), - &ireq->ir_v6_rmt_addr, port); + net_dbg_ratelimited("drop open request from %pI6/%u\n", + &ireq->ir_v6_rmt_addr, port); #endif } diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c index 9b21ae8b2e31..1829c7fbc77e 100644 --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -374,17 +374,19 @@ void tcp_retransmit_timer(struct sock *sk) */ struct inet_sock *inet = inet_sk(sk); if (sk->sk_family == AF_INET) { - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n"), - &inet->inet_daddr, - ntohs(inet->inet_dport), inet->inet_num, - tp->snd_una, tp->snd_nxt); + net_dbg_ratelimited("Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n", + &inet->inet_daddr, + ntohs(inet->inet_dport), + inet->inet_num, + tp->snd_una, tp->snd_nxt); } #if IS_ENABLED(CONFIG_IPV6) else if (sk->sk_family == AF_INET6) { - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n"), - &sk->sk_v6_daddr, - ntohs(inet->inet_dport), inet->inet_num, - tp->snd_una, tp->snd_nxt); + net_dbg_ratelimited("Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n", + &sk->sk_v6_daddr, + ntohs(inet->inet_dport), + inet->inet_num, + tp->snd_una, tp->snd_nxt); } #endif if (tcp_time_stamp - tp->rcv_tstamp > TCP_RTO_MAX) { diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index d13751685f44..1b6e9d5fadef 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1051,7 +1051,7 @@ back_from_confirm: /* ... which is an evident application bug. --ANK */ release_sock(sk); - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("cork app bug 2\n")); + net_dbg_ratelimited("cork app bug 2\n"); err = -EINVAL; goto out; } @@ -1133,7 +1133,7 @@ int udp_sendpage(struct sock *sk, struct page *page, int offset, if (unlikely(!up->pending)) { release_sock(sk); - LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("udp cork app bug 3\n")); + net_dbg_ratelimited("udp cork app bug 3\n"); return -EINVAL; } @@ -1547,8 +1547,8 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) * provided by the application." */ if (up->pcrlen == 0) { /* full coverage was set */ - LIMIT_NETDEBUG(KERN_WARNING "UDPLite: partial coverage %d while full coverage %d requested\n", - UDP_SKB_CB(skb)->cscov, skb->len); + net_dbg_ratelimited("UDPLite: partial coverage %d while full coverage %d requested\n", + UDP_SKB_CB(skb)->cscov, skb->len); goto drop; } /* The next case involves violating the min. coverage requested @@ -1558,8 +1558,8 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) * Therefore the above ...()->partial_cov statement is essential. */ if (UDP_SKB_CB(skb)->cscov < up->pcrlen) { - LIMIT_NETDEBUG(KERN_WARNING "UDPLite: coverage %d too small, need min %d\n", - UDP_SKB_CB(skb)->cscov, up->pcrlen); + net_dbg_ratelimited("UDPLite: coverage %d too small, need min %d\n", + UDP_SKB_CB(skb)->cscov, up->pcrlen); goto drop; } } @@ -1828,11 +1828,11 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, return 0; short_packet: - LIMIT_NETDEBUG(KERN_DEBUG "UDP%s: short packet: From %pI4:%u %d/%d to %pI4:%u\n", - proto == IPPROTO_UDPLITE ? "Lite" : "", - &saddr, ntohs(uh->source), - ulen, skb->len, - &daddr, ntohs(uh->dest)); + net_dbg_ratelimited("UDP%s: short packet: From %pI4:%u %d/%d to %pI4:%u\n", + proto == IPPROTO_UDPLITE ? "Lite" : "", + &saddr, ntohs(uh->source), + ulen, skb->len, + &daddr, ntohs(uh->dest)); goto drop; csum_error: @@ -1840,10 +1840,10 @@ csum_error: * RFC1122: OK. Discards the bad packet silently (as far as * the network is concerned, anyway) as per 4.1.3.4 (MUST). */ - LIMIT_NETDEBUG(KERN_DEBUG "UDP%s: bad checksum. From %pI4:%u to %pI4:%u ulen %d\n", - proto == IPPROTO_UDPLITE ? "Lite" : "", - &saddr, ntohs(uh->source), &daddr, ntohs(uh->dest), - ulen); + net_dbg_ratelimited("UDP%s: bad checksum. From %pI4:%u to %pI4:%u ulen %d\n", + proto == IPPROTO_UDPLITE ? "Lite" : "", + &saddr, ntohs(uh->source), &daddr, ntohs(uh->dest), + ulen); UDP_INC_STATS_BH(net, UDP_MIB_CSUMERRORS, proto == IPPROTO_UDPLITE); drop: UDP_INC_STATS_BH(net, UDP_MIB_INERRORS, proto == IPPROTO_UDPLITE); diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 06e897832a7a..251fcb48b216 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1411,10 +1411,8 @@ int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev, if (unlikely(score->addr_type == IPV6_ADDR_ANY || score->addr_type & IPV6_ADDR_MULTICAST)) { - LIMIT_NETDEBUG(KERN_DEBUG - "ADDRCONF: unspecified / multicast address " - "assigned as unicast address on %s", - dev->name); + net_dbg_ratelimited("ADDRCONF: unspecified / multicast address assigned as unicast address on %s", + dev->name); continue; } diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index 6d16eb0e0c7f..8ab1989198f6 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -272,10 +272,9 @@ static int ipv6_clear_mutable_options(struct ipv6hdr *iph, int len, int dir) ipv6_rearrange_destopt(iph, exthdr.opth); case NEXTHDR_HOP: if (!zero_out_mutable_opts(exthdr.opth)) { - LIMIT_NETDEBUG( - KERN_WARNING "overrun %sopts\n", - nexthdr == NEXTHDR_HOP ? - "hop" : "dest"); + net_dbg_ratelimited("overrun %sopts\n", + nexthdr == NEXTHDR_HOP ? + "hop" : "dest"); return -EINVAL; } break; diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 5c6996e44b14..cc1139687fd7 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -893,8 +893,8 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk, break; } default: - LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n", - cmsg->cmsg_type); + net_dbg_ratelimited("invalid cmsg type: %d\n", + cmsg->cmsg_type); err = -EINVAL; goto exit_f; } diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index d21d7b22eebc..d2c2d749b6db 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -286,8 +286,8 @@ static int esp_input_done2(struct sk_buff *skb, int err) err = -EINVAL; padlen = nexthdr[0]; if (padlen + 2 + alen >= elen) { - LIMIT_NETDEBUG(KERN_WARNING "ipsec esp packet is garbage " - "padlen=%d, elen=%d\n", padlen + 2, elen - alen); + net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n", + padlen + 2, elen - alen); goto out; } diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index 601d896f22d0..a7bbbe45570b 100644 --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -184,7 +184,7 @@ static bool ipv6_dest_hao(struct sk_buff *skb, int optoff) int ret; if (opt->dsthao) { - LIMIT_NETDEBUG(KERN_DEBUG "hao duplicated\n"); + net_dbg_ratelimited("hao duplicated\n"); goto discard; } opt->dsthao = opt->dst1; @@ -193,14 +193,14 @@ static bool ipv6_dest_hao(struct sk_buff *skb, int optoff) hao = (struct ipv6_destopt_hao *)(skb_network_header(skb) + optoff); if (hao->length != 16) { - LIMIT_NETDEBUG( - KERN_DEBUG "hao invalid option length = %d\n", hao->length); + net_dbg_ratelimited("hao invalid option length = %d\n", + hao->length); goto discard; } if (!(ipv6_addr_type(&hao->addr) & IPV6_ADDR_UNICAST)) { - LIMIT_NETDEBUG( - KERN_DEBUG "hao is not an unicast addr: %pI6\n", &hao->addr); + net_dbg_ratelimited("hao is not an unicast addr: %pI6\n", + &hao->addr); goto discard; } @@ -551,8 +551,8 @@ static bool ipv6_hop_ra(struct sk_buff *skb, int optoff) memcpy(&IP6CB(skb)->ra, nh + optoff + 2, sizeof(IP6CB(skb)->ra)); return true; } - LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_ra: wrong RA length %d\n", - nh[optoff + 1]); + net_dbg_ratelimited("ipv6_hop_ra: wrong RA length %d\n", + nh[optoff + 1]); kfree_skb(skb); return false; } @@ -566,8 +566,8 @@ static bool ipv6_hop_jumbo(struct sk_buff *skb, int optoff) u32 pkt_len; if (nh[optoff + 1] != 4 || (optoff & 3) != 2) { - LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n", - nh[optoff+1]); + net_dbg_ratelimited("ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n", + nh[optoff+1]); IP6_INC_STATS_BH(net, ipv6_skb_idev(skb), IPSTATS_MIB_INHDRERRORS); goto drop; diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 62c1037d9e83..092934032077 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -338,7 +338,7 @@ static struct dst_entry *icmpv6_route_lookup(struct net *net, * anycast. */ if (((struct rt6_info *)dst)->rt6i_flags & RTF_ANYCAST) { - LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: acast source\n"); + net_dbg_ratelimited("icmp6_send: acast source\n"); dst_release(dst); return ERR_PTR(-EINVAL); } @@ -452,7 +452,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) * and anycast addresses will be checked later. */ if ((addr_type == IPV6_ADDR_ANY) || (addr_type & IPV6_ADDR_MULTICAST)) { - LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: addr_any/mcast source\n"); + net_dbg_ratelimited("icmp6_send: addr_any/mcast source\n"); return; } @@ -460,7 +460,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) * Never answer to a ICMP packet. */ if (is_ineligible(skb)) { - LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: no reply to icmp error\n"); + net_dbg_ratelimited("icmp6_send: no reply to icmp error\n"); return; } @@ -509,7 +509,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) len = skb->len - msg.offset; len = min_t(unsigned int, len, IPV6_MIN_MTU - sizeof(struct ipv6hdr) - sizeof(struct icmp6hdr)); if (len < 0) { - LIMIT_NETDEBUG(KERN_DEBUG "icmp: len problem\n"); + net_dbg_ratelimited("icmp: len problem\n"); goto out_dst_release; } @@ -706,9 +706,8 @@ static int icmpv6_rcv(struct sk_buff *skb) daddr = &ipv6_hdr(skb)->daddr; if (skb_checksum_validate(skb, IPPROTO_ICMPV6, ip6_compute_pseudo)) { - LIMIT_NETDEBUG(KERN_DEBUG - "ICMPv6 checksum failed [%pI6c > %pI6c]\n", - saddr, daddr); + net_dbg_ratelimited("ICMPv6 checksum failed [%pI6c > %pI6c]\n", + saddr, daddr); goto csum_error; } @@ -781,7 +780,7 @@ static int icmpv6_rcv(struct sk_buff *skb) if (type & ICMPV6_INFOMSG_MASK) break; - LIMIT_NETDEBUG(KERN_DEBUG "icmpv6: msg of unknown type\n"); + net_dbg_ratelimited("icmpv6: msg of unknown type\n"); /* * error of unknown type. diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c index f61429d391d3..b9779d441b12 100644 --- a/net/ipv6/mip6.c +++ b/net/ipv6/mip6.c @@ -97,16 +97,17 @@ static int mip6_mh_filter(struct sock *sk, struct sk_buff *skb) return -1; if (mh->ip6mh_hdrlen < mip6_mh_len(mh->ip6mh_type)) { - LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH message too short: %d vs >=%d\n", - mh->ip6mh_hdrlen, mip6_mh_len(mh->ip6mh_type)); + net_dbg_ratelimited("mip6: MH message too short: %d vs >=%d\n", + mh->ip6mh_hdrlen, + mip6_mh_len(mh->ip6mh_type)); mip6_param_prob(skb, 0, offsetof(struct ip6_mh, ip6mh_hdrlen) + skb_network_header_len(skb)); return -1; } if (mh->ip6mh_proto != IPPROTO_NONE) { - LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH invalid payload proto = %d\n", - mh->ip6mh_proto); + net_dbg_ratelimited("mip6: MH invalid payload proto = %d\n", + mh->ip6mh_proto); mip6_param_prob(skb, 0, offsetof(struct ip6_mh, ip6mh_proto) + skb_network_header_len(skb)); return -1; @@ -288,7 +289,7 @@ static int mip6_destopt_offset(struct xfrm_state *x, struct sk_buff *skb, * XXX: packet if HAO exists. */ if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0) { - LIMIT_NETDEBUG(KERN_WARNING "mip6: hao exists already, override\n"); + net_dbg_ratelimited("mip6: hao exists already, override\n"); return offset; } diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c index d38e6a8d8b9f..398377a9d018 100644 --- a/net/ipv6/netfilter.c +++ b/net/ipv6/netfilter.c @@ -36,7 +36,7 @@ int ip6_route_me_harder(struct sk_buff *skb) err = dst->error; if (err) { IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES); - LIMIT_NETDEBUG(KERN_DEBUG "ip6_route_me_harder: No more route.\n"); + net_dbg_ratelimited("ip6_route_me_harder: No more route\n"); dst_release(dst); return err; } diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index d1fe36274906..0ba3de4f2368 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -660,15 +660,13 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) if ((is_udplite & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) { if (up->pcrlen == 0) { /* full coverage was set */ - LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage" - " %d while full coverage %d requested\n", - UDP_SKB_CB(skb)->cscov, skb->len); + net_dbg_ratelimited("UDPLITE6: partial coverage %d while full coverage %d requested\n", + UDP_SKB_CB(skb)->cscov, skb->len); goto drop; } if (UDP_SKB_CB(skb)->cscov < up->pcrlen) { - LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d " - "too small, need min %d\n", - UDP_SKB_CB(skb)->cscov, up->pcrlen); + net_dbg_ratelimited("UDPLITE6: coverage %d too small, need min %d\n", + UDP_SKB_CB(skb)->cscov, up->pcrlen); goto drop; } } @@ -761,9 +759,9 @@ static void udp6_csum_zero_error(struct sk_buff *skb) /* RFC 2460 section 8.1 says that we SHOULD log * this error. Well, it is reasonable. */ - LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0 for [%pI6c]:%u->[%pI6c]:%u\n", - &ipv6_hdr(skb)->saddr, ntohs(udp_hdr(skb)->source), - &ipv6_hdr(skb)->daddr, ntohs(udp_hdr(skb)->dest)); + net_dbg_ratelimited("IPv6: udp checksum is 0 for [%pI6c]:%u->[%pI6c]:%u\n", + &ipv6_hdr(skb)->saddr, ntohs(udp_hdr(skb)->source), + &ipv6_hdr(skb)->daddr, ntohs(udp_hdr(skb)->dest)); } /* @@ -931,14 +929,11 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, return 0; short_packet: - LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: From [%pI6c]:%u %d/%d to [%pI6c]:%u\n", - proto == IPPROTO_UDPLITE ? "-Lite" : "", - saddr, - ntohs(uh->source), - ulen, - skb->len, - daddr, - ntohs(uh->dest)); + net_dbg_ratelimited("UDP%sv6: short packet: From [%pI6c]:%u %d/%d to [%pI6c]:%u\n", + proto == IPPROTO_UDPLITE ? "-Lite" : "", + saddr, ntohs(uh->source), + ulen, skb->len, + daddr, ntohs(uh->dest)); goto discard; csum_error: UDP6_INC_STATS_BH(net, UDP_MIB_CSUMERRORS, proto == IPPROTO_UDPLITE); @@ -1290,7 +1285,7 @@ back_from_confirm: /* ... which is an evident application bug. --ANK */ release_sock(sk); - LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n"); + net_dbg_ratelimited("udp cork app bug 2\n"); err = -EINVAL; goto out; } diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index 5a940dbd74a3..32ab87d34828 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -426,16 +426,17 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev, out_dev = phonet_route_output(net, pn_sockaddr_get_addr(&sa)); if (!out_dev) { - LIMIT_NETDEBUG(KERN_WARNING"No Phonet route to %02X\n", - pn_sockaddr_get_addr(&sa)); + net_dbg_ratelimited("No Phonet route to %02X\n", + pn_sockaddr_get_addr(&sa)); goto out; } __skb_push(skb, sizeof(struct phonethdr)); skb->dev = out_dev; if (out_dev == dev) { - LIMIT_NETDEBUG(KERN_ERR"Phonet loop to %02X on %s\n", - pn_sockaddr_get_addr(&sa), dev->name); + net_dbg_ratelimited("Phonet loop to %02X on %s\n", + pn_sockaddr_get_addr(&sa), + dev->name); goto out_dev; } /* Some drivers (e.g. TUN) do not allocate HW header space */ diff --git a/net/phonet/pep-gprs.c b/net/phonet/pep-gprs.c index e9a83a637185..fa8237fdc57b 100644 --- a/net/phonet/pep-gprs.c +++ b/net/phonet/pep-gprs.c @@ -203,8 +203,7 @@ static netdev_tx_t gprs_xmit(struct sk_buff *skb, struct net_device *dev) len = skb->len; err = pep_write(sk, skb); if (err) { - LIMIT_NETDEBUG(KERN_WARNING"%s: TX error (%d)\n", - dev->name, err); + net_dbg_ratelimited("%s: TX error (%d)\n", dev->name, err); dev->stats.tx_aborted_errors++; dev->stats.tx_errors++; } else { diff --git a/net/phonet/pep.c b/net/phonet/pep.c index 44b2123e22b8..9cd069dfaf65 100644 --- a/net/phonet/pep.c +++ b/net/phonet/pep.c @@ -272,8 +272,8 @@ static int pipe_rcv_status(struct sock *sk, struct sk_buff *skb) hdr = pnp_hdr(skb); if (hdr->data[0] != PN_PEP_TYPE_COMMON) { - LIMIT_NETDEBUG(KERN_DEBUG"Phonet unknown PEP type: %u\n", - (unsigned int)hdr->data[0]); + net_dbg_ratelimited("Phonet unknown PEP type: %u\n", + (unsigned int)hdr->data[0]); return -EOPNOTSUPP; } @@ -304,8 +304,8 @@ static int pipe_rcv_status(struct sock *sk, struct sk_buff *skb) break; default: - LIMIT_NETDEBUG(KERN_DEBUG"Phonet unknown PEP indication: %u\n", - (unsigned int)hdr->data[1]); + net_dbg_ratelimited("Phonet unknown PEP indication: %u\n", + (unsigned int)hdr->data[1]); return -EOPNOTSUPP; } if (wake) @@ -451,8 +451,8 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb) break; default: - LIMIT_NETDEBUG(KERN_DEBUG"Phonet unknown PEP message: %u\n", - hdr->message_id); + net_dbg_ratelimited("Phonet unknown PEP message: %u\n", + hdr->message_id); err = -EINVAL; } out: -- cgit v1.2.3 From 829ae9d611651467fe6cd7be834bd33ca6b28dfe Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Sun, 30 Nov 2014 22:22:34 -0500 Subject: net-timestamp: allow reading recv cmsg on errqueue with origin tstamp Allow reading of timestamps and cmsg at the same time on all relevant socket families. One use is to correlate timestamps with egress device, by asking for cmsg IP_PKTINFO. on AF_INET sockets, call the relevant function (ip_cmsg_recv). To avoid changing legacy expectations, only do so if the caller sets a new timestamping flag SOF_TIMESTAMPING_OPT_CMSG. on AF_INET6 sockets, IPV6_PKTINFO and all other recv cmsg are already returned for all origins. only change is to set ifindex, which is not initialized for all error origins. In both cases, only generate the pktinfo message if an ifindex is known. This is not the case for ACK timestamps. The difference between the protocol families is probably a historical accident as a result of the different conditions for generating cmsg in the relevant ip(v6)_recv_error function: ipv4: if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP) { ipv6: if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) { At one time, this was the same test bar for the ICMP/ICMP6 distinction. This is no longer true. Signed-off-by: Willem de Bruijn ---- Changes v1 -> v2 large rewrite - integrate with existing pktinfo cmsg generation code - on ipv4: only send with new flag, to maintain legacy behavior - on ipv6: send at most a single pktinfo cmsg - on ipv6: initialize fields if not yet initialized The recv cmsg interfaces are also relevant to the discussion of whether looping packet headers is problematic. For v6, cmsgs that identify many headers are already returned. This patch expands that to v4. If it sounds reasonable, I will follow with patches 1. request timestamps without payload with SOF_TIMESTAMPING_OPT_TSONLY (http://patchwork.ozlabs.org/patch/366967/) 2. sysctl to conditionally drop all timestamps that have payload or cmsg from users without CAP_NET_RAW. Signed-off-by: David S. Miller --- Documentation/networking/timestamping.txt | 12 +++++++++++- include/uapi/linux/net_tstamp.h | 3 ++- net/ipv4/ip_sockglue.c | 22 ++++++++++++++++++++-- net/ipv6/datagram.c | 21 +++++++++++++++++++-- 4 files changed, 52 insertions(+), 6 deletions(-) (limited to 'net/ipv6/datagram.c') diff --git a/Documentation/networking/timestamping.txt b/Documentation/networking/timestamping.txt index 1d6d02d6ba52..b08e27261ff9 100644 --- a/Documentation/networking/timestamping.txt +++ b/Documentation/networking/timestamping.txt @@ -122,7 +122,7 @@ SOF_TIMESTAMPING_RAW_HARDWARE: 1.3.3 Timestamp Options -The interface supports one option +The interface supports the options SOF_TIMESTAMPING_OPT_ID: @@ -145,6 +145,16 @@ SOF_TIMESTAMPING_OPT_ID: stream sockets, it increments with every byte. +SOF_TIMESTAMPING_OPT_CMSG: + + Support recv() cmsg for all timestamped packets. Control messages + are already supported unconditionally on all packets with receive + timestamps and on IPv6 packets with transmit timestamp. This option + extends them to IPv4 packets with transmit timestamp. One use case + is to correlate packets with their egress device, by enabling socket + option IP_PKTINFO simultaneously. + + 1.4 Bytestream Timestamps The SO_TIMESTAMPING interface supports timestamping of bytes in a diff --git a/include/uapi/linux/net_tstamp.h b/include/uapi/linux/net_tstamp.h index ff354021bb69..edbc888ceb51 100644 --- a/include/uapi/linux/net_tstamp.h +++ b/include/uapi/linux/net_tstamp.h @@ -23,8 +23,9 @@ enum { SOF_TIMESTAMPING_OPT_ID = (1<<7), SOF_TIMESTAMPING_TX_SCHED = (1<<8), SOF_TIMESTAMPING_TX_ACK = (1<<9), + SOF_TIMESTAMPING_OPT_CMSG = (1<<10), - SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_TX_ACK, + SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_CMSG, SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | SOF_TIMESTAMPING_LAST }; diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 59eba6c7a512..640f26c6a9fe 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -399,6 +399,22 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf kfree_skb(skb); } +static bool ipv4_pktinfo_prepare_errqueue(const struct sock *sk, + const struct sk_buff *skb, + int ee_origin) +{ + struct in_pktinfo *info = PKTINFO_SKB_CB(skb); + + if ((ee_origin != SO_EE_ORIGIN_TIMESTAMPING) || + (!(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_CMSG)) || + (!skb->dev)) + return false; + + info->ipi_spec_dst.s_addr = ip_hdr(skb)->saddr; + info->ipi_ifindex = skb->dev->ifindex; + return true; +} + /* * Handle MSG_ERRQUEUE */ @@ -446,7 +462,9 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err)); sin = &errhdr.offender; sin->sin_family = AF_UNSPEC; - if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP) { + + if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || + ipv4_pktinfo_prepare_errqueue(sk, skb, serr->ee.ee_origin)) { struct inet_sock *inet = inet_sk(sk); sin->sin_family = AF_INET; @@ -1051,7 +1069,7 @@ e_inval: } /** - * ipv4_pktinfo_prepare - transfert some info from rtable to skb + * ipv4_pktinfo_prepare - transfer some info from rtable to skb * @sk: socket * @skb: buffer * diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index cc1139687fd7..2464a00e36ab 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -325,6 +325,16 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu) kfree_skb(skb); } +static void ip6_datagram_prepare_pktinfo_errqueue(struct sk_buff *skb) +{ + int ifindex = skb->dev ? skb->dev->ifindex : -1; + + if (skb->protocol == htons(ETH_P_IPV6)) + IP6CB(skb)->iif = ifindex; + else + PKTINFO_SKB_CB(skb)->ipi_ifindex = ifindex; +} + /* * Handle MSG_ERRQUEUE */ @@ -388,8 +398,12 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) sin->sin6_family = AF_INET6; sin->sin6_flowinfo = 0; sin->sin6_port = 0; - if (np->rxopt.all) + if (np->rxopt.all) { + if (serr->ee.ee_origin != SO_EE_ORIGIN_ICMP && + serr->ee.ee_origin != SO_EE_ORIGIN_ICMP6) + ip6_datagram_prepare_pktinfo_errqueue(skb); ip6_datagram_recv_common_ctl(sk, msg, skb); + } if (skb->protocol == htons(ETH_P_IPV6)) { sin->sin6_addr = ipv6_hdr(skb)->saddr; if (np->rxopt.all) @@ -491,7 +505,10 @@ void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, &src_info.ipi6_addr); } - put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info); + + if (src_info.ipi6_ifindex >= 0) + put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, + sizeof(src_info), &src_info); } } -- cgit v1.2.3 From f95b414edb18de59940dcebbefb49cf25c6d505c Mon Sep 17 00:00:00 2001 From: Gu Zheng Date: Thu, 11 Dec 2014 11:22:04 +0800 Subject: net: introduce helper macro for_each_cmsghdr Introduce helper macro for_each_cmsghdr as a wrapper of the enumerating cmsghdr from msghdr, just cleanup. Signed-off-by: Gu Zheng Signed-off-by: David S. Miller --- crypto/af_alg.c | 2 +- include/linux/socket.h | 4 ++++ net/core/scm.c | 3 +-- net/dccp/proto.c | 5 ++--- net/ipv4/ip_sockglue.c | 2 +- net/ipv6/datagram.c | 2 +- net/iucv/af_iucv.c | 4 +--- net/rds/send.c | 4 ++-- net/rxrpc/ar-output.c | 2 +- net/sctp/socket.c | 3 +-- 10 files changed, 15 insertions(+), 16 deletions(-) (limited to 'net/ipv6/datagram.c') diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 6a3ad8011585..bc21f520d489 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -399,7 +399,7 @@ int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con) { struct cmsghdr *cmsg; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; if (cmsg->cmsg_level != SOL_ALG) diff --git a/include/linux/socket.h b/include/linux/socket.h index 048d6d6eed6d..6e49a14365dc 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -103,6 +103,10 @@ struct cmsghdr { (cmsg)->cmsg_len <= (unsigned long) \ ((mhdr)->msg_controllen - \ ((char *)(cmsg) - (char *)(mhdr)->msg_control))) +#define for_each_cmsghdr(cmsg, msg) \ + for (cmsg = CMSG_FIRSTHDR(msg); \ + cmsg; \ + cmsg = CMSG_NXTHDR(msg, cmsg)) /* * Get the next cmsg header diff --git a/net/core/scm.c b/net/core/scm.c index b442e7e25e60..3b6899b7d810 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -129,8 +129,7 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p) struct cmsghdr *cmsg; int err; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) - { + for_each_cmsghdr(cmsg, msg) { err = -EINVAL; /* Verify that cmsg_len is at least sizeof(struct cmsghdr) */ diff --git a/net/dccp/proto.c b/net/dccp/proto.c index 19f038739087..e171b780b499 100644 --- a/net/dccp/proto.c +++ b/net/dccp/proto.c @@ -703,7 +703,7 @@ EXPORT_SYMBOL_GPL(compat_dccp_getsockopt); static int dccp_msghdr_parse(struct msghdr *msg, struct sk_buff *skb) { - struct cmsghdr *cmsg = CMSG_FIRSTHDR(msg); + struct cmsghdr *cmsg; /* * Assign an (opaque) qpolicy priority value to skb->priority. @@ -717,8 +717,7 @@ static int dccp_msghdr_parse(struct msghdr *msg, struct sk_buff *skb) */ skb->priority = 0; - for (; cmsg != NULL; cmsg = CMSG_NXTHDR(msg, cmsg)) { - + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 640f26c6a9fe..8a89c738b7a3 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -192,7 +192,7 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc, int err, val; struct cmsghdr *cmsg; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; #if IS_ENABLED(CONFIG_IPV6) diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 2464a00e36ab..100c589a2a6c 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -657,7 +657,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk, int len; int err = 0; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { int addr_type; if (!CMSG_OK(msg, cmsg)) { diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 1cd3f8107239..2e9953b2db84 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1070,9 +1070,7 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock, txmsg.class = 0; /* iterate over control messages */ - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; - cmsg = CMSG_NXTHDR(msg, cmsg)) { - + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) { err = -EINVAL; goto out; diff --git a/net/rds/send.c b/net/rds/send.c index 40a5629a0a13..42f65d4305c8 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -826,7 +826,7 @@ static int rds_rm_size(struct msghdr *msg, int data_len) int cmsg_groups = 0; int retval; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; @@ -878,7 +878,7 @@ static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm, struct cmsghdr *cmsg; int ret = 0; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c index 86e0f10aa2c0..e1a9373e5979 100644 --- a/net/rxrpc/ar-output.c +++ b/net/rxrpc/ar-output.c @@ -45,7 +45,7 @@ static int rxrpc_sendmsg_cmsg(struct rxrpc_sock *rx, struct msghdr *msg, if (msg->msg_controllen == 0) return -EINVAL; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + for_each_cmsghdr(cmsg, msg) { if (!CMSG_OK(msg, cmsg)) return -EINVAL; diff --git a/net/sctp/socket.c b/net/sctp/socket.c index c92f96cda699..2625eccb77d5 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -6592,8 +6592,7 @@ static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs) struct cmsghdr *cmsg; struct msghdr *my_msg = (struct msghdr *)msg; - for (cmsg = CMSG_FIRSTHDR(msg); cmsg != NULL; - cmsg = CMSG_NXTHDR(my_msg, cmsg)) { + for_each_cmsghdr(cmsg, my_msg) { if (!CMSG_OK(my_msg, cmsg)) return -EINVAL; -- cgit v1.2.3