diff options
author | David Ahern <dsa@cumulusnetworks.com> | 2015-08-28 02:07:01 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-08-28 23:32:36 +0300 |
commit | d39d14ffa24cca9f0e44aa4a63315f4c44c56a93 (patch) | |
tree | d19cc95a22ad69e2164b9b46609ce67c577af77f | |
parent | 3abef286cf2f138de353fb0b54453621de961043 (diff) | |
download | linux-d39d14ffa24cca9f0e44aa4a63315f4c44c56a93.tar.xz |
net: Add helper function to compare inetpeer addresses
tcp_metrics and inetpeer both have functions to compare inetpeer
addresses. Consolidate into 1 version.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | include/net/inetpeer.h | 16 | ||||
-rw-r--r-- | net/ipv4/inetpeer.c | 20 | ||||
-rw-r--r-- | net/ipv4/tcp_metrics.c | 6 |
3 files changed, 19 insertions, 23 deletions
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h index f75b9e7036a2..9d9b3446731d 100644 --- a/include/net/inetpeer.h +++ b/include/net/inetpeer.h @@ -121,6 +121,22 @@ static inline struct inet_peer *inet_getpeer_v6(struct inet_peer_base *base, return inet_getpeer(base, &daddr, create); } +static inline int inetpeer_addr_cmp(const struct inetpeer_addr *a, + const struct inetpeer_addr *b) +{ + int i, n = (a->family == AF_INET ? 1 : 4); + + for (i = 0; i < n; i++) { + if (a->addr.a6[i] == b->addr.a6[i]) + continue; + if ((__force u32)a->addr.a6[i] < (__force u32)b->addr.a6[i]) + return -1; + return 1; + } + + return 0; +} + /* can be called from BH context or outside */ void inet_putpeer(struct inet_peer *p); bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout); diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 241afd743d2c..86fa45809540 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -157,22 +157,6 @@ void __init inet_initpeers(void) INIT_DEFERRABLE_WORK(&gc_work, inetpeer_gc_worker); } -static int addr_compare(const struct inetpeer_addr *a, - const struct inetpeer_addr *b) -{ - int i, n = (a->family == AF_INET ? 1 : 4); - - for (i = 0; i < n; i++) { - if (a->addr.a6[i] == b->addr.a6[i]) - continue; - if ((__force u32)a->addr.a6[i] < (__force u32)b->addr.a6[i]) - return -1; - return 1; - } - - return 0; -} - #define rcu_deref_locked(X, BASE) \ rcu_dereference_protected(X, lockdep_is_held(&(BASE)->lock.lock)) @@ -188,7 +172,7 @@ static int addr_compare(const struct inetpeer_addr *a, *stackptr++ = &_base->root; \ for (u = rcu_deref_locked(_base->root, _base); \ u != peer_avl_empty;) { \ - int cmp = addr_compare(_daddr, &u->daddr); \ + int cmp = inetpeer_addr_cmp(_daddr, &u->daddr); \ if (cmp == 0) \ break; \ if (cmp == -1) \ @@ -215,7 +199,7 @@ static struct inet_peer *lookup_rcu(const struct inetpeer_addr *daddr, int count = 0; while (u != peer_avl_empty) { - int cmp = addr_compare(daddr, &u->daddr); + int cmp = inetpeer_addr_cmp(daddr, &u->daddr); if (cmp == 0) { /* Before taking a reference, check if this entry was * deleted (refcnt=-1) diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index 4ef4dd4bf38c..c8cbc2b4b792 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -81,11 +81,7 @@ static void tcp_metric_set(struct tcp_metrics_block *tm, static bool addr_same(const struct inetpeer_addr *a, const struct inetpeer_addr *b) { - if (a->family != b->family) - return false; - if (a->family == AF_INET) - return a->addr.a4 == b->addr.a4; - return ipv6_addr_equal(&a->addr.in6, &b->addr.in6); + return inetpeer_addr_cmp(a, b) == 0; } struct tcpm_hash_bucket { |