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arp-util: drop redundant line

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The client's IP address is already loaded to X.
(The comment of the dropped line is wrong, X instead of A.)
This commit is contained in:
Yu Watanabe 2021-11-09 10:33:57 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent e5a7570188
commit b01895bf70
1 changed files with 0 additions and 1 deletions
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src/libsystemd-network/arp-util.c
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@ -48,7 +48,6 @@ int arp_update_filter(int fd, const struct in_addr *a, const struct ether_addr *
BPF_STMT(BPF_LD + BPF_W + BPF_ABS, offsetof(struct ether_arp, arp_spa)), /* A <- SPA */ BPF_STMT(BPF_LD + BPF_W + BPF_ABS, offsetof(struct ether_arp, arp_spa)), /* A <- SPA */
BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_X, 0, 0, 1), /* A == X ? */ BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_X, 0, 0, 1), /* A == X ? */
BPF_STMT(BPF_RET + BPF_K, UINT32_MAX), /* accept */ BPF_STMT(BPF_RET + BPF_K, UINT32_MAX), /* accept */
BPF_STMT(BPF_LDX + BPF_IMM, htobe32(a->s_addr)), /* A <- clients IP */
BPF_STMT(BPF_LD + BPF_W + BPF_ABS, offsetof(struct ether_arp, arp_tpa)), /* A <- TPA */ BPF_STMT(BPF_LD + BPF_W + BPF_ABS, offsetof(struct ether_arp, arp_tpa)), /* A <- TPA */
BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_X, 0, 0, 1), /* A == 0 ? */ BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_X, 0, 0, 1), /* A == 0 ? */
BPF_STMT(BPF_RET + BPF_K, UINT32_MAX), /* accept */ BPF_STMT(BPF_RET + BPF_K, UINT32_MAX), /* accept */