xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pktgen: Add UDPCSUM flag to support UDP checksums

Browse Source 
UDP checksums are optional, hence pktgen has been omitting them in
favour of performance. The optional flag UDPCSUM enables UDP
checksumming. If the output device supports hardware checksumming
the skb is prepared and marked CHECKSUM_PARTIAL, otherwise the
checksum is generated in software.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
2013-07-25 18:12:18 +02:00
committed by David S. Miller
parent 82a54d0ebb
commit c26bf4a513
3 changed files with 55 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
net/ipv4/udp.c
View File

@@ -704,7 +704,7 @@ EXPORT_SYMBOL(udp_flush_pending_frames);
* @src: source IP address
* @dst: destination IP address
*/
static void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
{
struct udphdr *uh = udp_hdr(skb);
struct sk_buff *frags = skb_shinfo(skb)->frag_list;
@@ -740,6 +740,7 @@ static void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
uh->check = CSUM_MANGLED_0;
}
}
EXPORT_SYMBOL_GPL(udp4_hwcsum);
static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4)
{