diff options
| author | Mina Almasry <almasrymina@google.com> | 2024-09-10 17:14:51 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-09-11 20:44:31 -0700 |
| commit | 9f6b619edf2e85746f261b42ae8f818a59d126f7 (patch) | |
| tree | 0eba6fef2f40b4e4261e96815a9946b58869bf8e /net/core/dev.c | |
| parent | 0f921404689398943257793f7240db239a23b609 (diff) | |
net: support non paged skb frags
Make skb_frag_page() fail in the case where the frag is not backed
by a page, and fix its relevant callers to handle this case.
Signed-off-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240910171458.219195-8-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 7818d7f6295e..517b934bdf9c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3434,8 +3434,9 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) if (!(dev->features & NETIF_F_HIGHDMA)) { for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + struct page *page = skb_frag_page(frag); - if (PageHighMem(skb_frag_page(frag))) + if (page && PageHighMem(page)) return 1; } } |