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bpf: clat: change the signature of update_icmp_checksum()

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- rename argument 'add' to 'v4to6'
- make argument 'ip6h' const since it's not modified by the function
This commit is contained in:
Beniamino Galvani 2025-10-28 21:57:02 +01:00
parent 6a1f5a764e
commit c0d5e9ab91
1 changed files with 8 additions and 8 deletions
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10
src/core/bpf/clat.bpf.c
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@ -112,10 +112,10 @@ update_l4_checksum(struct __sk_buff *skb,
static void
update_icmp_checksum(struct __sk_buff *skb,
struct ipv6hdr *ip6h,
const struct ipv6hdr *ip6h,
void *icmp_before,
void *icmp_after,
bool add)
bool v4to6)
{
struct icmpv6_pseudo ph = {.nh = IPPROTO_ICMPV6, .len = ip6h->payload_len};
__u16 h_before, h_after;
@ -136,12 +136,12 @@ update_icmp_checksum(struct __sk_buff *skb,
* itself.
*/
csum = bpf_csum_diff((__be32 *) &ph,
add ? 0 : sizeof(ph),
v4to6 ? 0 : sizeof(ph),
(__be32 *) &ph,
add ? sizeof(ph) : 0,
v4to6 ? sizeof(ph) : 0,
0);
offset = sizeof(struct ethhdr) + (add ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) + 2;
offset = sizeof(struct ethhdr) + (v4to6 ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) + 2;
/* first two bytes of ICMP header, type and code */
h_before = *(__u16 *) icmp_before;