tcp: report ECN_SEEN in tcp_info

[~andy/linux] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 9c1926027a268162a3c37374a5f3397661c6dba6..dd2b9478ddd1537e0a3cf812e755cfd5cda68e33 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -465,8 +465,15 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        if (addr_len < sizeof(struct sockaddr_in))
                goto out;
 
-       if (addr->sin_family != AF_INET)
-               goto out;
+       if (addr->sin_family != AF_INET) {
+               /* Compatibility games : accept AF_UNSPEC (mapped to AF_INET)
+                * only if s_addr is INADDR_ANY.
+                */
+               err = -EAFNOSUPPORT;
+               if (addr->sin_family != AF_UNSPEC ||
+                   addr->sin_addr.s_addr != htonl(INADDR_ANY))
+                       goto out;
+       }
 
        chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
 
@@ -676,6 +683,7 @@ int inet_accept(struct socket *sock, struct socket *newsock, int flags)
 
        lock_sock(sk2);
 
+       sock_rps_record_flow(sk2);
        WARN_ON(!((1 << sk2->sk_state) &
                  (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE)));
 
@@ -1437,11 +1445,11 @@ EXPORT_SYMBOL_GPL(inet_ctl_sock_create);
 unsigned long snmp_fold_field(void __percpu *mib[], int offt)
 {
        unsigned long res = 0;
-       int i;
+       int i, j;
 
        for_each_possible_cpu(i) {
-               res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
-               res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
+               for (j = 0; j < SNMP_ARRAY_SZ; j++)
+                       res += *(((unsigned long *) per_cpu_ptr(mib[j], i)) + offt);
        }
        return res;
 }
@@ -1455,28 +1463,19 @@ u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
        int cpu;
 
        for_each_possible_cpu(cpu) {
-               void *bhptr, *userptr;
+               void *bhptr;
                struct u64_stats_sync *syncp;
-               u64 v_bh, v_user;
+               u64 v;
                unsigned int start;
 
-               /* first mib used by softirq context, we must use _bh() accessors */
-               bhptr = per_cpu_ptr(SNMP_STAT_BHPTR(mib), cpu);
+               bhptr = per_cpu_ptr(mib[0], cpu);
                syncp = (struct u64_stats_sync *)(bhptr + syncp_offset);
                do {
                        start = u64_stats_fetch_begin_bh(syncp);
-                       v_bh = *(((u64 *) bhptr) + offt);
+                       v = *(((u64 *) bhptr) + offt);
                } while (u64_stats_fetch_retry_bh(syncp, start));
 
-               /* second mib used in USER context */
-               userptr = per_cpu_ptr(SNMP_STAT_USRPTR(mib), cpu);
-               syncp = (struct u64_stats_sync *)(userptr + syncp_offset);
-               do {
-                       start = u64_stats_fetch_begin(syncp);
-                       v_user = *(((u64 *) userptr) + offt);
-               } while (u64_stats_fetch_retry(syncp, start));
-
-               res += v_bh + v_user;
+               res += v;
        }
        return res;
 }
@@ -1488,25 +1487,28 @@ int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align)
        BUG_ON(ptr == NULL);
        ptr[0] = __alloc_percpu(mibsize, align);
        if (!ptr[0])
-               goto err0;
+               return -ENOMEM;
+#if SNMP_ARRAY_SZ == 2
        ptr[1] = __alloc_percpu(mibsize, align);
-       if (!ptr[1])
-               goto err1;
+       if (!ptr[1]) {
+               free_percpu(ptr[0]);
+               ptr[0] = NULL;
+               return -ENOMEM;
+       }
+#endif
        return 0;
-err1:
-       free_percpu(ptr[0]);
-       ptr[0] = NULL;
-err0:
-       return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(snmp_mib_init);
 
-void snmp_mib_free(void __percpu *ptr[2])
+void snmp_mib_free(void __percpu *ptr[SNMP_ARRAY_SZ])
 {
+       int i;
+
        BUG_ON(ptr == NULL);
-       free_percpu(ptr[0]);
-       free_percpu(ptr[1]);
-       ptr[0] = ptr[1] = NULL;
+       for (i = 0; i < SNMP_ARRAY_SZ; i++) {
+               free_percpu(ptr[i]);
+               ptr[i] = NULL;
+       }
 }
 EXPORT_SYMBOL_GPL(snmp_mib_free);