diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-01-25 14:00:54 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-01-25 14:20:08 -0800 |
| commit | 06f609b3119876b42f19fdb690b10896d3c648e6 (patch) | |
| tree | 2f42b892152af80d299133ef6c902261a1fd0b98 /drivers/net/macsec.c | |
| parent | 91374ba537bd60caa9ae052c9f1c0fe055b39149 (diff) | |
| parent | ecb1b8288dc7ccbdcb3b9df005fa1c0e0c0388a7 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts or adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/macsec.c')
| -rw-r--r-- | drivers/net/macsec.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index e34816638569e..7f5426285c61b 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -607,11 +607,26 @@ static struct sk_buff *macsec_encrypt(struct sk_buff *skb, return ERR_PTR(-EINVAL); } - ret = skb_ensure_writable_head_tail(skb, dev); - if (unlikely(ret < 0)) { - macsec_txsa_put(tx_sa); - kfree_skb(skb); - return ERR_PTR(ret); + if (unlikely(skb_headroom(skb) < MACSEC_NEEDED_HEADROOM || + skb_tailroom(skb) < MACSEC_NEEDED_TAILROOM)) { + struct sk_buff *nskb = skb_copy_expand(skb, + MACSEC_NEEDED_HEADROOM, + MACSEC_NEEDED_TAILROOM, + GFP_ATOMIC); + if (likely(nskb)) { + consume_skb(skb); + skb = nskb; + } else { + macsec_txsa_put(tx_sa); + kfree_skb(skb); + return ERR_PTR(-ENOMEM); + } + } else { + skb = skb_unshare(skb, GFP_ATOMIC); + if (!skb) { + macsec_txsa_put(tx_sa); + return ERR_PTR(-ENOMEM); + } } unprotected_len = skb->len; |