diff options
| author | Dave Airlie <airlied@redhat.com> | 2020-08-11 11:58:31 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-08-11 11:58:31 +1000 |
| commit | c44264f9f729fd63bd6a81a6ac5cd6cd49af09e5 (patch) | |
| tree | ad77b18ffeafb50b3eb9ba6472670dc1d96f5558 /net/hsr/hsr_forward.c | |
| parent | ca457ab5908603b36be903e73977afde1ba03c84 (diff) | |
| parent | bcf876870b95592b52519ed4aafcf9d95999bc9c (diff) | |
Merge tag 'v5.8' into drm-next
I need to backmerge 5.8 as I've got a bunch of fixes sitting
on an rc7 base that I want to land.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'net/hsr/hsr_forward.c')
| -rw-r--r-- | net/hsr/hsr_forward.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/net/hsr/hsr_forward.c b/net/hsr/hsr_forward.c index ed13760463de..1ea17752fffc 100644 --- a/net/hsr/hsr_forward.c +++ b/net/hsr/hsr_forward.c @@ -120,13 +120,18 @@ static struct sk_buff *frame_get_stripped_skb(struct hsr_frame_info *frame, return skb_clone(frame->skb_std, GFP_ATOMIC); } -static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame, - struct hsr_port *port, u8 proto_version) +static struct sk_buff *hsr_fill_tag(struct sk_buff *skb, + struct hsr_frame_info *frame, + struct hsr_port *port, u8 proto_version) { struct hsr_ethhdr *hsr_ethhdr; int lane_id; int lsdu_size; + /* pad to minimum packet size which is 60 + 6 (HSR tag) */ + if (skb_put_padto(skb, ETH_ZLEN + HSR_HLEN)) + return NULL; + if (port->type == HSR_PT_SLAVE_A) lane_id = 0; else @@ -144,6 +149,8 @@ static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame, hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto; hsr_ethhdr->ethhdr.h_proto = htons(proto_version ? ETH_P_HSR : ETH_P_PRP); + + return skb; } static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o, @@ -172,9 +179,10 @@ static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o, memmove(dst, src, movelen); skb_reset_mac_header(skb); - hsr_fill_tag(skb, frame, port, port->hsr->prot_version); - - return skb; + /* skb_put_padto free skb on error and hsr_fill_tag returns NULL in + * that case + */ + return hsr_fill_tag(skb, frame, port, port->hsr->prot_version); } /* If the original frame was an HSR tagged frame, just clone it to be sent |