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authorJiri Kosina <jkosina@suse.cz>2013-09-04 10:49:39 +0200
committerJiri Kosina <jkosina@suse.cz>2013-09-04 10:49:57 +0200
commitefd15f5f4ff63f6ac5d80850686e3d2cc8c4481b (patch)
tree40024adbe77a3d660662e639fd765097133d648c /net/ipv4/udp.c
parentHID: battery: don't do DMA from stack (diff)
parentMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jik... (diff)
downloadlinux-efd15f5f4ff63f6ac5d80850686e3d2cc8c4481b.tar.xz
linux-efd15f5f4ff63f6ac5d80850686e3d2cc8c4481b.zip
Merge branch 'master' into for-3.12/upstream
Sync with Linus' tree to be able to apply fixup patch on top of 9d9a04ee75 ("HID: apple: Add support for the 2013 Macbook Air") Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c94
1 files changed, 16 insertions, 78 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 0bf5d399a03c..766e6bab9113 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -109,6 +109,7 @@
#include <trace/events/udp.h>
#include <linux/static_key.h>
#include <trace/events/skb.h>
+#include <net/busy_poll.h>
#include "udp_impl.h"
struct udp_table udp_table __read_mostly;
@@ -429,7 +430,7 @@ begin:
reuseport = sk->sk_reuseport;
if (reuseport) {
hash = inet_ehashfn(net, daddr, hnum,
- saddr, htons(sport));
+ saddr, sport);
matches = 1;
}
} else if (score == badness && reuseport) {
@@ -510,7 +511,7 @@ begin:
reuseport = sk->sk_reuseport;
if (reuseport) {
hash = inet_ehashfn(net, daddr, hnum,
- saddr, htons(sport));
+ saddr, sport);
matches = 1;
}
} else if (score == badness && reuseport) {
@@ -799,7 +800,7 @@ send:
/*
* Push out all pending data as one UDP datagram. Socket is locked.
*/
-static int udp_push_pending_frames(struct sock *sk)
+int udp_push_pending_frames(struct sock *sk)
{
struct udp_sock *up = udp_sk(sk);
struct inet_sock *inet = inet_sk(sk);
@@ -818,6 +819,7 @@ out:
up->pending = 0;
return err;
}
+EXPORT_SYMBOL(udp_push_pending_frames);
int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
size_t len)
@@ -1709,7 +1711,10 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
if (sk != NULL) {
- int ret = udp_queue_rcv_skb(sk, skb);
+ int ret;
+
+ sk_mark_napi_id(sk, skb);
+ ret = udp_queue_rcv_skb(sk, skb);
sock_put(sk);
/* a return value > 0 means to resubmit the input, but
@@ -1967,6 +1972,8 @@ unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait)
unsigned int mask = datagram_poll(file, sock, wait);
struct sock *sk = sock->sk;
+ sock_rps_record_flow(sk);
+
/* Check for false positives due to checksum errors */
if ((mask & POLLRDNORM) && !(file->f_flags & O_NONBLOCK) &&
!(sk->sk_shutdown & RCV_SHUTDOWN) && !first_packet_length(sk))
@@ -2284,29 +2291,8 @@ void __init udp_init(void)
sysctl_udp_wmem_min = SK_MEM_QUANTUM;
}
-int udp4_ufo_send_check(struct sk_buff *skb)
-{
- if (!pskb_may_pull(skb, sizeof(struct udphdr)))
- return -EINVAL;
-
- if (likely(!skb->encapsulation)) {
- const struct iphdr *iph;
- struct udphdr *uh;
-
- iph = ip_hdr(skb);
- uh = udp_hdr(skb);
-
- uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
- IPPROTO_UDP, 0);
- skb->csum_start = skb_transport_header(skb) - skb->head;
- skb->csum_offset = offsetof(struct udphdr, check);
- skb->ip_summed = CHECKSUM_PARTIAL;
- }
- return 0;
-}
-
-static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
- netdev_features_t features)
+struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
+ netdev_features_t features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
int mac_len = skb->mac_len;
@@ -2337,6 +2323,9 @@ static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
struct udphdr *uh;
int udp_offset = outer_hlen - tnl_hlen;
+ skb_reset_inner_headers(skb);
+ skb->encapsulation = 1;
+
skb->mac_len = mac_len;
skb_push(skb, outer_hlen);
@@ -2359,59 +2348,8 @@ static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
uh->check = CSUM_MANGLED_0;
}
- skb->ip_summed = CHECKSUM_NONE;
skb->protocol = protocol;
} while ((skb = skb->next));
out:
return segs;
}
-
-struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
- netdev_features_t features)
-{
- struct sk_buff *segs = ERR_PTR(-EINVAL);
- unsigned int mss;
- mss = skb_shinfo(skb)->gso_size;
- if (unlikely(skb->len <= mss))
- goto out;
-
- if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
- /* Packet is from an untrusted source, reset gso_segs. */
- int type = skb_shinfo(skb)->gso_type;
-
- if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_GRE) ||
- !(type & (SKB_GSO_UDP))))
- goto out;
-
- skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
-
- segs = NULL;
- goto out;
- }
-
- /* Fragment the skb. IP headers of the fragments are updated in
- * inet_gso_segment()
- */
- if (skb->encapsulation && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL)
- segs = skb_udp_tunnel_segment(skb, features);
- else {
- int offset;
- __wsum csum;
-
- /* Do software UFO. Complete and fill in the UDP checksum as
- * HW cannot do checksum of UDP packets sent as multiple
- * IP fragments.
- */
- offset = skb_checksum_start_offset(skb);
- csum = skb_checksum(skb, offset, skb->len - offset, 0);
- offset += skb->csum_offset;
- *(__sum16 *)(skb->data + offset) = csum_fold(csum);
- skb->ip_summed = CHECKSUM_NONE;
-
- segs = skb_segment(skb, features);
- }
-out:
- return segs;
-}