diff options
author | Eric Dumazet <edumazet@google.com> | 2015-03-19 19:04:19 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-03-20 12:40:25 -0400 |
commit | 52452c542559ac980b48dbf22a30ee7fa0af507c (patch) | |
tree | a212dbe95694ea11e86b9d9aca8a2eba0b06a2d1 /net/dccp | |
parent | a998f712f77ea4892d3fcf24e0a67603e63da128 (diff) | |
download | linux-stable-52452c542559ac980b48dbf22a30ee7fa0af507c.tar.gz linux-stable-52452c542559ac980b48dbf22a30ee7fa0af507c.tar.bz2 linux-stable-52452c542559ac980b48dbf22a30ee7fa0af507c.zip |
inet: drop prev pointer handling in request sock
When request sock are put in ehash table, the whole notion
of having a previous request to update dl_next is pointless.
Also, following patch will get rid of big purge timer,
so we want to delete a request sock without holding listener lock.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp')
-rw-r--r-- | net/dccp/dccp.h | 3 | ||||
-rw-r--r-- | net/dccp/ipv4.c | 14 | ||||
-rw-r--r-- | net/dccp/ipv6.c | 19 | ||||
-rw-r--r-- | net/dccp/minisocks.c | 7 |
4 files changed, 18 insertions, 25 deletions
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index 3b1d64d6e093..2396f50c5b04 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -280,8 +280,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb, struct request_sock *req, struct dst_entry *dst); struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb, - struct request_sock *req, - struct request_sock **prev); + struct request_sock *req); int dccp_child_process(struct sock *parent, struct sock *child, struct sk_buff *skb); diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index e7ad291cd96b..5bffbbaf1fac 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -288,11 +288,11 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info) } switch (sk->sk_state) { - struct request_sock *req , **prev; + struct request_sock *req; case DCCP_LISTEN: if (sock_owned_by_user(sk)) goto out; - req = inet_csk_search_req(sk, &prev, dh->dccph_dport, + req = inet_csk_search_req(sk, dh->dccph_dport, iph->daddr, iph->saddr); if (!req) goto out; @@ -314,7 +314,7 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info) * created socket, and POSIX does not want network * errors returned from accept(). */ - inet_csk_reqsk_queue_drop(sk, req, prev); + inet_csk_reqsk_queue_drop(sk, req); goto out; case DCCP_REQUESTING: @@ -448,13 +448,11 @@ static struct sock *dccp_v4_hnd_req(struct sock *sk, struct sk_buff *skb) const struct dccp_hdr *dh = dccp_hdr(skb); const struct iphdr *iph = ip_hdr(skb); struct sock *nsk; - struct request_sock **prev; /* Find possible connection requests. */ - struct request_sock *req = inet_csk_search_req(sk, &prev, - dh->dccph_sport, + struct request_sock *req = inet_csk_search_req(sk, dh->dccph_sport, iph->saddr, iph->daddr); - if (req != NULL) - return dccp_check_req(sk, skb, req, prev); + if (req) + return dccp_check_req(sk, skb, req); nsk = inet_lookup_established(sock_net(sk), &dccp_hashinfo, iph->saddr, dh->dccph_sport, diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index c655de5f67c9..ae2184039fe3 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -149,12 +149,12 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, /* Might be for an request_sock */ switch (sk->sk_state) { - struct request_sock *req, **prev; + struct request_sock *req; case DCCP_LISTEN: if (sock_owned_by_user(sk)) goto out; - req = inet6_csk_search_req(sk, &prev, dh->dccph_dport, + req = inet6_csk_search_req(sk, dh->dccph_dport, &hdr->daddr, &hdr->saddr, inet6_iif(skb)); if (req == NULL) @@ -172,7 +172,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, goto out; } - inet_csk_reqsk_queue_drop(sk, req, prev); + inet_csk_reqsk_queue_drop(sk, req); goto out; case DCCP_REQUESTING: @@ -317,16 +317,13 @@ static struct sock *dccp_v6_hnd_req(struct sock *sk,struct sk_buff *skb) { const struct dccp_hdr *dh = dccp_hdr(skb); const struct ipv6hdr *iph = ipv6_hdr(skb); + struct request_sock *req; struct sock *nsk; - struct request_sock **prev; - /* Find possible connection requests. */ - struct request_sock *req = inet6_csk_search_req(sk, &prev, - dh->dccph_sport, - &iph->saddr, - &iph->daddr, - inet6_iif(skb)); + + req = inet6_csk_search_req(sk, dh->dccph_sport, &iph->saddr, + &iph->daddr, inet6_iif(skb)); if (req != NULL) - return dccp_check_req(sk, skb, req, prev); + return dccp_check_req(sk, skb, req); nsk = __inet6_lookup_established(sock_net(sk), &dccp_hashinfo, &iph->saddr, dh->dccph_sport, diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c index b50dc436db1f..332f7d6d9942 100644 --- a/net/dccp/minisocks.c +++ b/net/dccp/minisocks.c @@ -152,8 +152,7 @@ EXPORT_SYMBOL_GPL(dccp_create_openreq_child); * as an request_sock. */ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb, - struct request_sock *req, - struct request_sock **prev) + struct request_sock *req) { struct sock *child = NULL; struct dccp_request_sock *dreq = dccp_rsk(req); @@ -200,7 +199,7 @@ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb, if (child == NULL) goto listen_overflow; - inet_csk_reqsk_queue_unlink(sk, req, prev); + inet_csk_reqsk_queue_unlink(sk, req); inet_csk_reqsk_queue_removed(sk, req); inet_csk_reqsk_queue_add(sk, req, child); out: @@ -212,7 +211,7 @@ drop: if (dccp_hdr(skb)->dccph_type != DCCP_PKT_RESET) req->rsk_ops->send_reset(sk, skb); - inet_csk_reqsk_queue_drop(sk, req, prev); + inet_csk_reqsk_queue_drop(sk, req); goto out; } |