31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
Revert commit https://github.com/torvalds/linux/commit/a0ade8404c3bc2bf2631cb0f20d372eed22d9d96
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The change caused API regression by turning fixed size struct to
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flexible size struct. It was an unintentional change, broke `udp2raw`:
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https://github.com/NixOS/nixpkgs/pull/252587#issuecomment-1744427473
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--- a/include/uapi/linux/if_packet.h
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+++ b/include/uapi/linux/if_packet.h
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@@ -18,11 +18,7 @@ struct sockaddr_ll {
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unsigned short sll_hatype;
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unsigned char sll_pkttype;
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unsigned char sll_halen;
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- union {
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- unsigned char sll_addr[8];
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- /* Actual length is in sll_halen. */
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- __DECLARE_FLEX_ARRAY(unsigned char, sll_addr_flex);
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- };
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+ unsigned char sll_addr[8];
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};
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/* Packet types */
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--- a/net/packet/af_packet.c
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+++ b/net/packet/af_packet.c
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@@ -3607,7 +3607,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
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if (dev) {
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sll->sll_hatype = dev->type;
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sll->sll_halen = dev->addr_len;
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- memcpy(sll->sll_addr_flex, dev->dev_addr, dev->addr_len);
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+ memcpy(sll->sll_addr, dev->dev_addr, dev->addr_len);
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} else {
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sll->sll_hatype = 0; /* Bad: we have no ARPHRD_UNSPEC */
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sll->sll_halen = 0;
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