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optimize: replace c arithmetic operators with bitwise ones (#628)

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Integral 2024-09-13 14:39:33 +00:00 committed by GitHub
parent 9701f5a377
commit e637d666e0
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1 changed files with 12 additions and 12 deletions
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24
control/kern/tproxy.c
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@ -408,7 +408,7 @@ static __always_inline __u8 ipv4_get_dscp(const struct iphdr *iph)
static __always_inline __u8 ipv6_get_dscp(const struct ipv6hdr *ipv6h) static __always_inline __u8 ipv6_get_dscp(const struct ipv6hdr *ipv6h)
{ {
return (ipv6h->priority << 2) + (ipv6h->flow_lbl[0] >> 6); return (ipv6h->priority << 2) | (ipv6h->flow_lbl[0] >> 6);
} }
static __always_inline void static __always_inline void
@ -1112,9 +1112,9 @@ new_connection:
__be32 mac[4] = { __be32 mac[4] = {
0, 0,
0, 0,
bpf_htonl((ethh.h_source[0] << 8) + (ethh.h_source[1])), bpf_htonl((ethh.h_source[0] << 8) | (ethh.h_source[1])),
bpf_htonl((ethh.h_source[2] << 24) + (ethh.h_source[3] << 16) + bpf_htonl((ethh.h_source[2] << 24) | (ethh.h_source[3] << 16) |
(ethh.h_source[4] << 8) + (ethh.h_source[5])), (ethh.h_source[4] << 8) | (ethh.h_source[5])),
}; };
__s64 s64_ret; __s64 s64_ret;
@ -1405,11 +1405,11 @@ int tproxy_wan_egress(struct __sk_buff *skb)
__be32 mac[4] = { __be32 mac[4] = {
0, 0,
0, 0,
bpf_htonl((ethh.h_source[0] << 8) + bpf_htonl((ethh.h_source[0] << 8) |
(ethh.h_source[1])), (ethh.h_source[1])),
bpf_htonl((ethh.h_source[2] << 24) + bpf_htonl((ethh.h_source[2] << 24) |
(ethh.h_source[3] << 16) + (ethh.h_source[3] << 16) |
(ethh.h_source[4] << 8) + (ethh.h_source[4] << 8) |
(ethh.h_source[5])), (ethh.h_source[5])),
}; };
__s64 s64_ret; __s64 s64_ret;
@ -1532,10 +1532,10 @@ int tproxy_wan_egress(struct __sk_buff *skb)
__be32 mac[4] = { __be32 mac[4] = {
0, 0,
0, 0,
bpf_htonl((ethh.h_source[0] << 8) + (ethh.h_source[1])), bpf_htonl((ethh.h_source[0] << 8) | (ethh.h_source[1])),
bpf_htonl((ethh.h_source[2] << 24) + bpf_htonl((ethh.h_source[2] << 24) |
(ethh.h_source[3] << 16) + (ethh.h_source[3] << 16) |
(ethh.h_source[4] << 8) + (ethh.h_source[5])), (ethh.h_source[4] << 8) | (ethh.h_source[5])),
}; };
__s64 s64_ret; __s64 s64_ret;