[PATCH 6/13] inet_diag: Introduce the byte-code run on an inet socket
From: Pavel Emelyanov <hidden>
Date: 2011-12-09 16:22:49
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The upcoming UDP module will require exactly this ability, so just move the existing code to provide one. Signed-off-by: Pavel Emelyanov <redacted> --- include/linux/inet_diag.h | 2 + net/ipv4/inet_diag.c | 55 +++++++++++++++++++++++++------------------- 2 files changed, 33 insertions(+), 24 deletions(-)
diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 5036747..907c899 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h@@ -135,6 +135,7 @@ struct tcpvegas_info { #ifdef __KERNEL__ struct sock; struct inet_hashinfo; +struct nlattr; struct inet_diag_handler { struct inet_hashinfo *idiag_hashinfo;
@@ -144,6 +145,7 @@ struct inet_diag_handler { __u16 idiag_type; }; +int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk); int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req); extern int inet_diag_register(const struct inet_diag_handler *handler);
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index f50df2e..08e5498 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c@@ -449,6 +449,35 @@ static int inet_diag_bc_run(const struct nlattr *_bc, return len == 0; } +int inet_diag_bc_sk(const struct nlattr *bc, struct sock *sk) +{ + struct inet_diag_entry entry; + struct inet_sock *inet = inet_sk(sk); + + if (bc == NULL) + return 1; + + entry.family = sk->sk_family; +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) + if (entry.family == AF_INET6) { + struct ipv6_pinfo *np = inet6_sk(sk); + + entry.saddr = np->rcv_saddr.s6_addr32; + entry.daddr = np->daddr.s6_addr32; + } else +#endif + { + entry.saddr = &inet->inet_rcv_saddr; + entry.daddr = &inet->inet_daddr; + } + entry.sport = inet->inet_num; + entry.dport = ntohs(inet->inet_dport); + entry.userlocks = sk->sk_userlocks; + + return inet_diag_bc_run(bc, &entry); +} +EXPORT_SYMBOL_GPL(inet_diag_bc_sk); + static int valid_cc(const void *bc, int len, int cc) { while (len >= 0) {
@@ -509,30 +538,8 @@ static int inet_csk_diag_dump(struct sock *sk, struct inet_diag_req *r, const struct nlattr *bc) { - if (bc != NULL) { - struct inet_diag_entry entry; - struct inet_sock *inet = inet_sk(sk); - - entry.family = sk->sk_family; -#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) - if (entry.family == AF_INET6) { - struct ipv6_pinfo *np = inet6_sk(sk); - - entry.saddr = np->rcv_saddr.s6_addr32; - entry.daddr = np->daddr.s6_addr32; - } else -#endif - { - entry.saddr = &inet->inet_rcv_saddr; - entry.daddr = &inet->inet_daddr; - } - entry.sport = inet->inet_num; - entry.dport = ntohs(inet->inet_dport); - entry.userlocks = sk->sk_userlocks; - - if (!inet_diag_bc_run(bc, &entry)) - return 0; - } + if (!inet_diag_bc_sk(bc, sk)) + return 0; return inet_csk_diag_fill(sk, skb, r, NETLINK_CB(cb->skb).pid,
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1.5.5.6