7e98da058f
This change reorganizes and cleanups our patches to reduce the patch number from 314 patches to 187. That's achieved by dropping patches that are later reverted and squashing fixes for earlier patches that introduced features. There are no code changes and the diff with upstream is the same before and after the cleanup. Having fewer patches makes easier to manage the patchset and also will ease to rebase them on top of the latest grub-2.04 release. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
66 lines
2.4 KiB
Diff
66 lines
2.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrzej Kacprowski <andrzej.kacprowski@intel.com>
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Date: Fri, 21 Apr 2017 09:20:38 +0200
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Subject: [PATCH] Use xid to match DHCP replies
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Transaction identifier (xid) from DHCP request
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packet is stored in network level interface and used
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to match request with the responses it generates.
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Resolves: rhbz#1370642
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Signed-off-by: Andrzej Kacprowski <andrzej.kacprowski@intel.com>
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---
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grub-core/net/bootp.c | 3 ++-
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grub-core/net/ip.c | 1 +
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include/grub/net.h | 3 ++-
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3 files changed, 5 insertions(+), 2 deletions(-)
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diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c
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index da3e454466b..2869482fe06 100644
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--- a/grub-core/net/bootp.c
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+++ b/grub-core/net/bootp.c
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@@ -777,7 +777,8 @@ grub_cmd_bootp (struct grub_command *cmd __attribute__ ((unused)),
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grub_errno = GRUB_ERR_NONE;
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t = 0;
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}
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- pack->ident = grub_cpu_to_be32 (t);
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+ pack->xid = grub_cpu_to_be32 (t);
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+ ifaces[j].dhcp_xid = pack->xid;
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pack->seconds = grub_cpu_to_be16 (t);
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grub_memcpy (&pack->mac_addr, &ifaces[j].hwaddress.mac, 6);
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diff --git a/grub-core/net/ip.c b/grub-core/net/ip.c
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index 7c95cc7464a..8411e0ecca3 100644
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--- a/grub-core/net/ip.c
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+++ b/grub-core/net/ip.c
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@@ -275,6 +275,7 @@ handle_dgram (struct grub_net_buff *nb,
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FOR_NET_NETWORK_LEVEL_INTERFACES (inf)
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if (inf->card == card
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&& inf->address.type == GRUB_NET_NETWORK_LEVEL_PROTOCOL_DHCP_RECV
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+ && inf->dhcp_xid == bootp->xid
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&& inf->hwaddress.type == GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET
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&& grub_memcmp (inf->hwaddress.mac, &bootp->mac_addr,
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sizeof (inf->hwaddress.mac)) == 0)
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diff --git a/include/grub/net.h b/include/grub/net.h
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index f8f3ec13acc..de51894cbbf 100644
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--- a/include/grub/net.h
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+++ b/include/grub/net.h
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@@ -292,6 +292,7 @@ struct grub_net_network_level_interface
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struct grub_net_bootp_packet *dhcp_ack;
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grub_size_t dhcp_acklen;
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grub_uint16_t vlantag;
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+ grub_uint32_t dhcp_xid;
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void *data;
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};
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@@ -429,7 +430,7 @@ struct grub_net_bootp_packet
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grub_uint8_t hw_type; /* hardware type. */
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grub_uint8_t hw_len; /* hardware addr len. */
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grub_uint8_t gate_hops; /* zero it. */
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- grub_uint32_t ident; /* random number chosen by client. */
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+ grub_uint32_t xid; /* transaction id chosen by client. */
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grub_uint16_t seconds; /* seconds since did initial bootstrap. */
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grub_uint16_t flags;
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grub_uint32_t client_ip;
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