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ipsec-2024-03-19

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Merge tag 'ipsec-2024-03-19' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2024-03-19

1) Fix possible page_pool leak triggered by esp_output.
   From Dragos Tatulea.

2) Fix UDP encapsulation in software GSO path.
   From Leon Romanovsky.

* tag 'ipsec-2024-03-19' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec:
  xfrm: Allow UDP encapsulation only in offload modes
  net: esp: fix bad handling of pages from page_pool
====================

Link: https://lore.kernel.org/r/20240319110151.409825-1-steffen.klassert@secunet.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2024-03-19 19:44:02 -07:00
commit 94e3ca2fef
4 changed files with 20 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
include/linux/skbuff.h
View file

@ -3523,6 +3523,16 @@ int skb_cow_data_for_xdp(struct page_pool *pool, struct sk_buff **pskb,
struct bpf_prog *prog);
bool napi_pp_put_page(struct page *page, bool napi_safe);
static inline void
skb_page_unref(const struct sk_buff *skb, struct page *page, bool napi_safe)
{
#ifdef CONFIG_PAGE_POOL
if (skb->pp_recycle && napi_pp_put_page(page, napi_safe))
return;
#endif
put_page(page);
}
static inline void
napi_frag_unref(skb_frag_t *frag, bool recycle, bool napi_safe)
{

8
net/ipv4/esp4.c
View file

@ -95,7 +95,7 @@ static inline struct scatterlist *esp_req_sg(struct crypto_aead *aead,
__alignof__(struct scatterlist));
}
static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
static void esp_ssg_unref(struct xfrm_state *x, void *tmp, struct sk_buff *skb)
{
struct crypto_aead *aead = x->data;
int extralen = 0;
@ -114,7 +114,7 @@ static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
*/
if (req->src != req->dst)
for (sg = sg_next(req->src); sg; sg = sg_next(sg))
put_page(sg_page(sg));
skb_page_unref(skb, sg_page(sg), false);
}
#ifdef CONFIG_INET_ESPINTCP
@ -260,7 +260,7 @@ static void esp_output_done(void *data, int err)
}
tmp = ESP_SKB_CB(skb)->tmp;
esp_ssg_unref(x, tmp);
esp_ssg_unref(x, tmp, skb);
kfree(tmp);
if (xo && (xo->flags & XFRM_DEV_RESUME)) {
@ -639,7 +639,7 @@ int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
}
if (sg != dsg)
esp_ssg_unref(x, tmp);
esp_ssg_unref(x, tmp, skb);
if (!err && x->encap && x->encap->encap_type == TCP_ENCAP_ESPINTCP)
err = esp_output_tail_tcp(x, skb);

8
net/ipv6/esp6.c
View file

@ -112,7 +112,7 @@ static inline struct scatterlist *esp_req_sg(struct crypto_aead *aead,
__alignof__(struct scatterlist));
}
static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
static void esp_ssg_unref(struct xfrm_state *x, void *tmp, struct sk_buff *skb)
{
struct crypto_aead *aead = x->data;
int extralen = 0;
@ -131,7 +131,7 @@ static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
*/
if (req->src != req->dst)
for (sg = sg_next(req->src); sg; sg = sg_next(sg))
put_page(sg_page(sg));
skb_page_unref(skb, sg_page(sg), false);
}
#ifdef CONFIG_INET6_ESPINTCP
@ -294,7 +294,7 @@ static void esp_output_done(void *data, int err)
}
tmp = ESP_SKB_CB(skb)->tmp;
esp_ssg_unref(x, tmp);
esp_ssg_unref(x, tmp, skb);
kfree(tmp);
esp_output_encap_csum(skb);
@ -677,7 +677,7 @@ int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
}
if (sg != dsg)
esp_ssg_unref(x, tmp);
esp_ssg_unref(x, tmp, skb);
if (!err && x->encap && x->encap->encap_type == TCP_ENCAP_ESPINTCP)
err = esp_output_tail_tcp(x, skb);

3
net/xfrm/xfrm_device.c
View file

@ -407,7 +407,8 @@ bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x)
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
struct net_device *dev = x->xso.dev;
if (!x->type_offload)
if (!x->type_offload ||
(x->xso.type == XFRM_DEV_OFFLOAD_UNSPECIFIED && x->encap))
return false;
if (x->xso.type == XFRM_DEV_OFFLOAD_PACKET ||