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-rw-r--r--net/ipv4/udp.c43
-rw-r--r--net/ipv6/udp.c34
-rw-r--r--net/sunrpc/svcsock.c20
-rw-r--r--net/sunrpc/xprtsock.c2
4 files changed, 33 insertions, 66 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index be3c3312df8d..c8332715ee2d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1307,13 +1307,7 @@ static int first_packet_length(struct sock *sk)
res = skb ? skb->len : -1;
spin_unlock_bh(&rcvq->lock);
- if (!skb_queue_empty(&list_kill)) {
- bool slow = lock_sock_fast(sk);
-
- __skb_queue_purge(&list_kill);
- sk_mem_reclaim_partial(sk);
- unlock_sock_fast(sk, slow);
- }
+ __skb_queue_purge(&list_kill);
return res;
}
@@ -1362,7 +1356,6 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
int err;
int is_udplite = IS_UDPLITE(sk);
bool checksum_valid = false;
- bool slow;
if (flags & MSG_ERRQUEUE)
return ip_recv_error(sk, msg, len, addr_len);
@@ -1403,13 +1396,12 @@ try_again:
}
if (unlikely(err)) {
- trace_kfree_skb(skb, udp_recvmsg);
if (!peeked) {
atomic_inc(&sk->sk_drops);
UDP_INC_STATS(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
}
- skb_free_datagram_locked(sk, skb);
+ kfree_skb(skb);
return err;
}
@@ -1434,16 +1426,15 @@ try_again:
if (flags & MSG_TRUNC)
err = ulen;
- __skb_free_datagram_locked(sk, skb, peeking ? -err : err);
+ skb_consume_udp(sk, skb, peeking ? -err : err);
return err;
csum_copy_err:
- slow = lock_sock_fast(sk);
- if (!skb_kill_datagram(sk, skb, flags)) {
+ if (!__sk_queue_drop_skb(sk, skb, flags)) {
UDP_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
}
- unlock_sock_fast(sk, slow);
+ kfree_skb(skb);
/* starting over for a new packet, but check if we need to yield */
cond_resched();
@@ -1562,7 +1553,7 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
sk_incoming_cpu_update(sk);
}
- rc = __sock_queue_rcv_skb(sk, skb);
+ rc = __udp_enqueue_schedule_skb(sk, skb);
if (rc < 0) {
int is_udplite = IS_UDPLITE(sk);
@@ -1577,7 +1568,6 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
}
return 0;
-
}
static struct static_key udp_encap_needed __read_mostly;
@@ -1599,7 +1589,6 @@ EXPORT_SYMBOL(udp_encap_enable);
int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
struct udp_sock *up = udp_sk(sk);
- int rc;
int is_udplite = IS_UDPLITE(sk);
/*
@@ -1686,25 +1675,9 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
goto drop;
udp_csum_pull_header(skb);
- if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
- __UDP_INC_STATS(sock_net(sk), UDP_MIB_RCVBUFERRORS,
- is_udplite);
- goto drop;
- }
-
- rc = 0;
ipv4_pktinfo_prepare(sk, skb);
- bh_lock_sock(sk);
- if (!sock_owned_by_user(sk))
- rc = __udp_queue_rcv_skb(sk, skb);
- else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) {
- bh_unlock_sock(sk);
- goto drop;
- }
- bh_unlock_sock(sk);
-
- return rc;
+ return __udp_queue_rcv_skb(sk, skb);
csum_error:
__UDP_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
@@ -2314,13 +2287,13 @@ struct proto udp_prot = {
.connect = ip4_datagram_connect,
.disconnect = udp_disconnect,
.ioctl = udp_ioctl,
+ .init = udp_init_sock,
.destroy = udp_destroy_sock,
.setsockopt = udp_setsockopt,
.getsockopt = udp_getsockopt,
.sendmsg = udp_sendmsg,
.recvmsg = udp_recvmsg,
.sendpage = udp_sendpage,
- .backlog_rcv = __udp_queue_rcv_skb,
.release_cb = ip4_datagram_release_cb,
.hash = udp_lib_hash,
.unhash = udp_lib_unhash,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 9aa7c1c7a9ce..71963b23d5a5 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -334,7 +334,6 @@ int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
int is_udplite = IS_UDPLITE(sk);
bool checksum_valid = false;
int is_udp4;
- bool slow;
if (flags & MSG_ERRQUEUE)
return ipv6_recv_error(sk, msg, len, addr_len);
@@ -378,7 +377,6 @@ try_again:
goto csum_copy_err;
}
if (unlikely(err)) {
- trace_kfree_skb(skb, udpv6_recvmsg);
if (!peeked) {
atomic_inc(&sk->sk_drops);
if (is_udp4)
@@ -388,7 +386,7 @@ try_again:
UDP6_INC_STATS(sock_net(sk), UDP_MIB_INERRORS,
is_udplite);
}
- skb_free_datagram_locked(sk, skb);
+ kfree_skb(skb);
return err;
}
if (!peeked) {
@@ -437,12 +435,11 @@ try_again:
if (flags & MSG_TRUNC)
err = ulen;
- __skb_free_datagram_locked(sk, skb, peeking ? -err : err);
+ skb_consume_udp(sk, skb, peeking ? -err : err);
return err;
csum_copy_err:
- slow = lock_sock_fast(sk);
- if (!skb_kill_datagram(sk, skb, flags)) {
+ if (!__sk_queue_drop_skb(sk, skb, flags)) {
if (is_udp4) {
UDP_INC_STATS(sock_net(sk),
UDP_MIB_CSUMERRORS, is_udplite);
@@ -455,7 +452,7 @@ csum_copy_err:
UDP_MIB_INERRORS, is_udplite);
}
}
- unlock_sock_fast(sk, slow);
+ kfree_skb(skb);
/* starting over for a new packet, but check if we need to yield */
cond_resched();
@@ -523,7 +520,7 @@ static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
sk_incoming_cpu_update(sk);
}
- rc = __sock_queue_rcv_skb(sk, skb);
+ rc = __udp_enqueue_schedule_skb(sk, skb);
if (rc < 0) {
int is_udplite = IS_UDPLITE(sk);
@@ -535,6 +532,7 @@ static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
kfree_skb(skb);
return -1;
}
+
return 0;
}
@@ -556,7 +554,6 @@ EXPORT_SYMBOL(udpv6_encap_enable);
int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
struct udp_sock *up = udp_sk(sk);
- int rc;
int is_udplite = IS_UDPLITE(sk);
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
@@ -622,25 +619,10 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
goto drop;
udp_csum_pull_header(skb);
- if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
- __UDP6_INC_STATS(sock_net(sk),
- UDP_MIB_RCVBUFERRORS, is_udplite);
- goto drop;
- }
skb_dst_drop(skb);
- bh_lock_sock(sk);
- rc = 0;
- if (!sock_owned_by_user(sk))
- rc = __udpv6_queue_rcv_skb(sk, skb);
- else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) {
- bh_unlock_sock(sk);
- goto drop;
- }
- bh_unlock_sock(sk);
-
- return rc;
+ return __udpv6_queue_rcv_skb(sk, skb);
csum_error:
__UDP6_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
@@ -1433,12 +1415,12 @@ struct proto udpv6_prot = {
.connect = ip6_datagram_connect,
.disconnect = udp_disconnect,
.ioctl = udp_ioctl,
+ .init = udp_init_sock,
.destroy = udpv6_destroy_sock,
.setsockopt = udpv6_setsockopt,
.getsockopt = udpv6_getsockopt,
.sendmsg = udpv6_sendmsg,
.recvmsg = udpv6_recvmsg,
- .backlog_rcv = __udpv6_queue_rcv_skb,
.release_cb = ip6_datagram_release_cb,
.hash = udp_lib_hash,
.unhash = udp_lib_unhash,
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 57625f64efd5..e2a55dc787e6 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -39,6 +39,7 @@
#include <net/checksum.h>
#include <net/ip.h>
#include <net/ipv6.h>
+#include <net/udp.h>
#include <net/tcp.h>
#include <net/tcp_states.h>
#include <asm/uaccess.h>
@@ -129,6 +130,18 @@ static void svc_release_skb(struct svc_rqst *rqstp)
}
}
+static void svc_release_udp_skb(struct svc_rqst *rqstp)
+{
+ struct sk_buff *skb = rqstp->rq_xprt_ctxt;
+
+ if (skb) {
+ rqstp->rq_xprt_ctxt = NULL;
+
+ dprintk("svc: service %p, releasing skb %p\n", rqstp, skb);
+ consume_skb(skb);
+ }
+}
+
union svc_pktinfo_u {
struct in_pktinfo pkti;
struct in6_pktinfo pkti6;
@@ -575,7 +588,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
goto out_free;
}
local_bh_enable();
- skb_free_datagram_locked(svsk->sk_sk, skb);
+ consume_skb(skb);
} else {
/* we can use it in-place */
rqstp->rq_arg.head[0].iov_base = skb->data;
@@ -602,8 +615,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
return len;
out_free:
- trace_kfree_skb(skb, svc_udp_recvfrom);
- skb_free_datagram_locked(svsk->sk_sk, skb);
+ kfree_skb(skb);
return 0;
}
@@ -660,7 +672,7 @@ static struct svc_xprt_ops svc_udp_ops = {
.xpo_create = svc_udp_create,
.xpo_recvfrom = svc_udp_recvfrom,
.xpo_sendto = svc_udp_sendto,
- .xpo_release_rqst = svc_release_skb,
+ .xpo_release_rqst = svc_release_udp_skb,
.xpo_detach = svc_sock_detach,
.xpo_free = svc_sock_free,
.xpo_prep_reply_hdr = svc_udp_prep_reply_hdr,
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 0137af1c0916..1758665d609c 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1083,7 +1083,7 @@ static void xs_udp_data_receive(struct sock_xprt *transport)
skb = skb_recv_datagram(sk, 0, 1, &err);
if (skb != NULL) {
xs_udp_data_read_skb(&transport->xprt, sk, skb);
- skb_free_datagram_locked(sk, skb);
+ consume_skb(skb);
continue;
}
if (!test_and_clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state))
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.