diff options
author | Dave Airlie <airlied@redhat.com> | 2014-06-05 06:28:59 -0400 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2014-06-05 06:28:59 -0400 |
commit | 8d4ad9d4bb0a618c975a32d77087694ec6336f68 (patch) | |
tree | d18d12688174a623e3503b11118e44ef8186c90b /net/ipv4/ip_forward.c | |
parent | 5ea1f752ae04be403a3dc8ec876a60d7f5f6990a (diff) | |
parent | 9e9a928eed8796a0a1aaed7e0b676db86ba84594 (diff) |
Merge commit '9e9a928eed8796a0a1aaed7e0b676db86ba84594' into drm-next
Merge drm-fixes into drm-next.
Both i915 and radeon need this done for later patches.
Conflicts:
drivers/gpu/drm/drm_crtc_helper.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/i915_gem_execbuffer.c
drivers/gpu/drm/i915/i915_gem_gtt.c
Diffstat (limited to 'net/ipv4/ip_forward.c')
-rw-r--r-- | net/ipv4/ip_forward.c | 54 |
1 files changed, 2 insertions, 52 deletions
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index be8abe73bb9f..6f111e48e11c 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c | |||
@@ -42,12 +42,12 @@ | |||
42 | static bool ip_may_fragment(const struct sk_buff *skb) | 42 | static bool ip_may_fragment(const struct sk_buff *skb) |
43 | { | 43 | { |
44 | return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) || | 44 | return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) || |
45 | !skb->local_df; | 45 | skb->local_df; |
46 | } | 46 | } |
47 | 47 | ||
48 | static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) | 48 | static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) |
49 | { | 49 | { |
50 | if (skb->len <= mtu || skb->local_df) | 50 | if (skb->len <= mtu) |
51 | return false; | 51 | return false; |
52 | 52 | ||
53 | if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) | 53 | if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) |
@@ -56,53 +56,6 @@ static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) | |||
56 | return true; | 56 | return true; |
57 | } | 57 | } |
58 | 58 | ||
59 | static bool ip_gso_exceeds_dst_mtu(const struct sk_buff *skb) | ||
60 | { | ||
61 | unsigned int mtu; | ||
62 | |||
63 | if (skb->local_df || !skb_is_gso(skb)) | ||
64 | return false; | ||
65 | |||
66 | mtu = ip_dst_mtu_maybe_forward(skb_dst(skb), true); | ||
67 | |||
68 | /* if seglen > mtu, do software segmentation for IP fragmentation on | ||
69 | * output. DF bit cannot be set since ip_forward would have sent | ||
70 | * icmp error. | ||
71 | */ | ||
72 | return skb_gso_network_seglen(skb) > mtu; | ||
73 | } | ||
74 | |||
75 | /* called if GSO skb needs to be fragmented on forward */ | ||
76 | static int ip_forward_finish_gso(struct sk_buff *skb) | ||
77 | { | ||
78 | struct dst_entry *dst = skb_dst(skb); | ||
79 | netdev_features_t features; | ||
80 | struct sk_buff *segs; | ||
81 | int ret = 0; | ||
82 | |||
83 | features = netif_skb_dev_features(skb, dst->dev); | ||
84 | segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK); | ||
85 | if (IS_ERR(segs)) { | ||
86 | kfree_skb(skb); | ||
87 | return -ENOMEM; | ||
88 | } | ||
89 | |||
90 | consume_skb(skb); | ||
91 | |||
92 | do { | ||
93 | struct sk_buff *nskb = segs->next; | ||
94 | int err; | ||
95 | |||
96 | segs->next = NULL; | ||
97 | err = dst_output(segs); | ||
98 | |||
99 | if (err && ret == 0) | ||
100 | ret = err; | ||
101 | segs = nskb; | ||
102 | } while (segs); | ||
103 | |||
104 | return ret; | ||
105 | } | ||
106 | 59 | ||
107 | static int ip_forward_finish(struct sk_buff *skb) | 60 | static int ip_forward_finish(struct sk_buff *skb) |
108 | { | 61 | { |
@@ -114,9 +67,6 @@ static int ip_forward_finish(struct sk_buff *skb) | |||
114 | if (unlikely(opt->optlen)) | 67 | if (unlikely(opt->optlen)) |
115 | ip_forward_options(skb); | 68 | ip_forward_options(skb); |
116 | 69 | ||
117 | if (ip_gso_exceeds_dst_mtu(skb)) | ||
118 | return ip_forward_finish_gso(skb); | ||
119 | |||
120 | return dst_output(skb); | 70 | return dst_output(skb); |
121 | } | 71 | } |
122 | 72 | ||