diff options
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 9554cf46ed88..1e8c90e97608 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -42,6 +42,7 @@ #include <net/sock.h> #include <net/snmp.h> +#include <net/gso.h> #include <net/ipv6.h> #include <net/ndisc.h> #include <net/protocol.h> @@ -1589,6 +1590,15 @@ emsgsize: skb_zcopy_set(skb, uarg, &extra_uref); } } + } else if ((flags & MSG_SPLICE_PAGES) && length) { + if (inet_sk(sk)->hdrincl) + return -EPERM; + if (rt->dst.dev->features & NETIF_F_SG && + getfrag == ip_generic_getfrag) + /* We need an empty buffer to attach stuff to */ + paged = true; + else + flags &= ~MSG_SPLICE_PAGES; } /* @@ -1778,6 +1788,15 @@ alloc_new_skb: err = -EFAULT; goto error; } + } else if (flags & MSG_SPLICE_PAGES) { + struct msghdr *msg = from; + + err = skb_splice_from_iter(skb, &msg->msg_iter, copy, + sk->sk_allocation); + if (err < 0) + goto error; + copy = err; + wmem_alloc_delta += copy; } else if (!zc) { int i = skb_shinfo(skb)->nr_frags; |