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Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c2
-rw-r--r--net/core/ethtool.c1
-rw-r--r--net/core/skbuff.c22
-rw-r--r--net/ipv4/af_inet.c34
-rw-r--r--net/ipv4/gre_demux.c29
-rw-r--r--net/ipv4/gre_offload.c3
-rw-r--r--net/ipv4/ip_tunnel_core.c33
-rw-r--r--net/ipv4/ipip.c11
-rw-r--r--net/ipv4/tcp_offload.c1
-rw-r--r--net/ipv4/udp_offload.c1
-rw-r--r--net/ipv6/ip6_offload.c1
-rw-r--r--net/ipv6/udp_offload.c1
-rw-r--r--net/mpls/mpls_gso.c1
13 files changed, 81 insertions, 59 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 1b6eadf69289..0918aadc20fd 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2377,6 +2377,8 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
}
SKB_GSO_CB(skb)->mac_offset = skb_headroom(skb);
+ SKB_GSO_CB(skb)->encap_level = 0;
+
skb_reset_mac_header(skb);
skb_reset_mac_len(skb);
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 78e9d9223e40..8cab7744790e 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -81,6 +81,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
[NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
[NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
[NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
+ [NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation",
[NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
[NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation",
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 8ead744fcc94..0ab32faa520f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -903,6 +903,9 @@ EXPORT_SYMBOL(skb_clone);
static void skb_headers_offset_update(struct sk_buff *skb, int off)
{
+ /* Only adjust this if it actually is csum_start rather than csum */
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ skb->csum_start += off;
/* {transport,network,mac}_header and tail are relative to skb->head */
skb->transport_header += off;
skb->network_header += off;
@@ -1109,9 +1112,6 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
#endif
skb->tail += off;
skb_headers_offset_update(skb, nhead);
- /* Only adjust this if it actually is csum_start rather than csum */
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- skb->csum_start += nhead;
skb->cloned = 0;
skb->hdr_len = 0;
skb->nohdr = 0;
@@ -1176,7 +1176,6 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
NUMA_NO_NODE);
int oldheadroom = skb_headroom(skb);
int head_copy_len, head_copy_off;
- int off;
if (!n)
return NULL;
@@ -1200,11 +1199,7 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
copy_skb_header(n, skb);
- off = newheadroom - oldheadroom;
- if (n->ip_summed == CHECKSUM_PARTIAL)
- n->csum_start += off;
-
- skb_headers_offset_update(n, off);
+ skb_headers_offset_update(n, newheadroom - oldheadroom);
return n;
}
@@ -2837,14 +2832,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
__copy_skb_header(nskb, skb);
nskb->mac_len = skb->mac_len;
- /* nskb and skb might have different headroom */
- if (nskb->ip_summed == CHECKSUM_PARTIAL)
- nskb->csum_start += skb_headroom(nskb) - headroom;
-
- skb_reset_mac_header(nskb);
- skb_set_network_header(nskb, skb->mac_len);
- nskb->transport_header = (nskb->network_header +
- skb_network_header_len(skb));
+ skb_headers_offset_update(nskb, skb_headroom(nskb) - headroom);
skb_copy_from_linear_data_offset(skb, -tnl_hlen,
nskb->data - tnl_hlen,
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 4f8cd4fc451d..4049906010f7 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1273,16 +1273,17 @@ out:
}
static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
- netdev_features_t features)
+ netdev_features_t features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
const struct net_offload *ops;
+ unsigned int offset = 0;
struct iphdr *iph;
+ bool tunnel;
int proto;
+ int nhoff;
int ihl;
int id;
- unsigned int offset = 0;
- bool tunnel;
if (unlikely(skb_shinfo(skb)->gso_type &
~(SKB_GSO_TCPV4 |
@@ -1290,12 +1291,15 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
SKB_GSO_GRE |
+ SKB_GSO_IPIP |
SKB_GSO_TCPV6 |
SKB_GSO_UDP_TUNNEL |
SKB_GSO_MPLS |
0)))
goto out;
+ skb_reset_network_header(skb);
+ nhoff = skb_network_header(skb) - skb_mac_header(skb);
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
@@ -1312,7 +1316,10 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
goto out;
__skb_pull(skb, ihl);
- tunnel = !!skb->encapsulation;
+ tunnel = SKB_GSO_CB(skb)->encap_level > 0;
+ if (tunnel)
+ features = skb->dev->hw_enc_features & netif_skb_features(skb);
+ SKB_GSO_CB(skb)->encap_level += ihl;
skb_reset_transport_header(skb);
@@ -1327,18 +1334,23 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
skb = segs;
do {
- iph = ip_hdr(skb);
+ iph = (struct iphdr *)(skb_mac_header(skb) + nhoff);
if (!tunnel && proto == IPPROTO_UDP) {
iph->id = htons(id);
iph->frag_off = htons(offset >> 3);
if (skb->next != NULL)
iph->frag_off |= htons(IP_MF);
- offset += (skb->len - skb->mac_len - iph->ihl * 4);
+ offset += skb->len - nhoff - ihl;
} else {
iph->id = htons(id++);
}
- iph->tot_len = htons(skb->len - skb->mac_len);
+ iph->tot_len = htons(skb->len - nhoff);
ip_send_check(iph);
+ if (tunnel) {
+ skb_reset_inner_headers(skb);
+ skb->encapsulation = 1;
+ }
+ skb->network_header = (u8 *)iph - skb->head;
} while ((skb = skb->next));
out:
@@ -1645,6 +1657,13 @@ static struct packet_offload ip_packet_offload __read_mostly = {
},
};
+static const struct net_offload ipip_offload = {
+ .callbacks = {
+ .gso_send_check = inet_gso_send_check,
+ .gso_segment = inet_gso_segment,
+ },
+};
+
static int __init ipv4_offload_init(void)
{
/*
@@ -1656,6 +1675,7 @@ static int __init ipv4_offload_init(void)
pr_crit("%s: Cannot add TCP protocol offload\n", __func__);
dev_add_offload(&ip_packet_offload);
+ inet_add_offload(&ipip_offload, IPPROTO_IPIP);
return 0;
}
diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
index 736c9fc3ef93..5893e99e8299 100644
--- a/net/ipv4/gre_demux.c
+++ b/net/ipv4/gre_demux.c
@@ -93,35 +93,6 @@ void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
}
EXPORT_SYMBOL_GPL(gre_build_header);
-struct sk_buff *gre_handle_offloads(struct sk_buff *skb, bool gre_csum)
-{
- int err;
-
- if (likely(!skb->encapsulation)) {
- skb_reset_inner_headers(skb);
- skb->encapsulation = 1;
- }
-
- if (skb_is_gso(skb)) {
- err = skb_unclone(skb, GFP_ATOMIC);
- if (unlikely(err))
- goto error;
- skb_shinfo(skb)->gso_type |= SKB_GSO_GRE;
- return skb;
- } else if (skb->ip_summed == CHECKSUM_PARTIAL && gre_csum) {
- err = skb_checksum_help(skb);
- if (unlikely(err))
- goto error;
- } else if (skb->ip_summed != CHECKSUM_PARTIAL)
- skb->ip_summed = CHECKSUM_NONE;
-
- return skb;
-error:
- kfree_skb(skb);
- return ERR_PTR(err);
-}
-EXPORT_SYMBOL_GPL(gre_handle_offloads);
-
static __sum16 check_checksum(struct sk_buff *skb)
{
__sum16 csum = 0;
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 55e6bfb3a289..e5d436188464 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -39,7 +39,8 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
SKB_GSO_UDP |
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
- SKB_GSO_GRE)))
+ SKB_GSO_GRE |
+ SKB_GSO_IPIP)))
goto out;
if (unlikely(!pskb_may_pull(skb, sizeof(*greh))))
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index c31e3ad98ef2..42ffbc8d65c6 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -116,3 +116,36 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)
return 0;
}
EXPORT_SYMBOL_GPL(iptunnel_pull_header);
+
+struct sk_buff *iptunnel_handle_offloads(struct sk_buff *skb,
+ bool csum_help,
+ int gso_type_mask)
+{
+ int err;
+
+ if (likely(!skb->encapsulation)) {
+ skb_reset_inner_headers(skb);
+ skb->encapsulation = 1;
+ }
+
+ if (skb_is_gso(skb)) {
+ err = skb_unclone(skb, GFP_ATOMIC);
+ if (unlikely(err))
+ goto error;
+ skb_shinfo(skb)->gso_type |= gso_type_mask;
+ return skb;
+ }
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL && csum_help) {
+ err = skb_checksum_help(skb);
+ if (unlikely(err))
+ goto error;
+ } else if (skb->ip_summed != CHECKSUM_PARTIAL)
+ skb->ip_summed = CHECKSUM_NONE;
+
+ return skb;
+error:
+ kfree_skb(skb);
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(iptunnel_handle_offloads);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 7f80fb4b82d3..fe3e9f7f1f0b 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -220,17 +220,17 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (unlikely(skb->protocol != htons(ETH_P_IP)))
goto tx_error;
- if (likely(!skb->encapsulation)) {
- skb_reset_inner_headers(skb);
- skb->encapsulation = 1;
- }
+ skb = iptunnel_handle_offloads(skb, false, SKB_GSO_IPIP);
+ if (IS_ERR(skb))
+ goto out;
ip_tunnel_xmit(skb, dev, tiph, tiph->protocol);
return NETDEV_TX_OK;
tx_error:
- dev->stats.tx_errors++;
dev_kfree_skb(skb);
+out:
+ dev->stats.tx_errors++;
return NETDEV_TX_OK;
}
@@ -275,6 +275,7 @@ static const struct net_device_ops ipip_netdev_ops = {
#define IPIP_FEATURES (NETIF_F_SG | \
NETIF_F_FRAGLIST | \
NETIF_F_HIGHDMA | \
+ NETIF_F_GSO_SOFTWARE | \
NETIF_F_HW_CSUM)
static void ipip_tunnel_setup(struct net_device *dev)
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
index 8e3113f46ec1..dfc96b00673e 100644
--- a/net/ipv4/tcp_offload.c
+++ b/net/ipv4/tcp_offload.c
@@ -56,6 +56,7 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
SKB_GSO_TCP_ECN |
SKB_GSO_TCPV6 |
SKB_GSO_GRE |
+ SKB_GSO_IPIP |
SKB_GSO_MPLS |
SKB_GSO_UDP_TUNNEL |
0) ||
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index f35eccaa855e..83206de2bc76 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -52,6 +52,7 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
SKB_GSO_UDP_TUNNEL |
+ SKB_GSO_IPIP |
SKB_GSO_GRE | SKB_GSO_MPLS) ||
!(type & (SKB_GSO_UDP))))
goto out;
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index b405fba91c72..5c2fc1d04196 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -96,6 +96,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
SKB_GSO_GRE |
+ SKB_GSO_IPIP |
SKB_GSO_UDP_TUNNEL |
SKB_GSO_MPLS |
SKB_GSO_TCPV6 |
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index 60559511bd9c..f63780ff3732 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -64,6 +64,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
SKB_GSO_DODGY |
SKB_GSO_UDP_TUNNEL |
SKB_GSO_GRE |
+ SKB_GSO_IPIP |
SKB_GSO_MPLS) ||
!(type & (SKB_GSO_UDP))))
goto out;
diff --git a/net/mpls/mpls_gso.c b/net/mpls/mpls_gso.c
index 1bec1219ab81..851cd880b0c0 100644
--- a/net/mpls/mpls_gso.c
+++ b/net/mpls/mpls_gso.c
@@ -33,6 +33,7 @@ static struct sk_buff *mpls_gso_segment(struct sk_buff *skb,
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
SKB_GSO_GRE |
+ SKB_GSO_IPIP |
SKB_GSO_MPLS)))
goto out;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 00:10:59 +0000