uboot-lantiq: fix compatibility with gcc7
Backport u-boot commit 704f3acfcf55343043bbed01c5fb0a0094a68e8a to fix compatibility with gcc7. Signed-off-by: Martin Schiller <ms@dev.tdt.de>
This commit is contained in:
Martin Schiller
Mathias Kresin
parent
81f7bdcb8d
commit
e86cdf85a7
1 changed files with 142 additions and 0 deletions
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From 704f3acfcf55343043bbed01c5fb0a0094a68e8a Mon Sep 17 00:00:00 2001
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From: Denis Pynkin <denis.pynkin@collabora.com>
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Date: Fri, 21 Jul 2017 19:28:42 +0300
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Subject: [PATCH] net: Use packed structures for networking
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PXE boot is broken with GCC 7.1 due option '-fstore-merging' enabled
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by default for '-O2':
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BOOTP broadcast 1
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data abort
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pc : [<8ff8bb30>] lr : [<00004f1f>]
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reloc pc : [<17832b30>] lr : [<878abf1f>]
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sp : 8f558bc0 ip : 00000000 fp : 8ffef5a4
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r10: 8ffed248 r9 : 8f558ee0 r8 : 8ffef594
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r7 : 0000000e r6 : 8ffed700 r5 : 00000000 r4 : 8ffed74e
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r3 : 00060101 r2 : 8ffed230 r1 : 8ffed706 r0 : 00000ddd
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Flags: nzcv IRQs off FIQs off Mode SVC_32
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Resetting CPU ...
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Core reason is usage of structures for network headers without packed
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attribute.
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Reviewed-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
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Signed-off-by: Denis Pynkin <denis.pynkin@collabora.com>
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Acked-by: Joe Hershberger <joe.hershberger@ni.com>
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---
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include/net.h | 14 +++++++-------
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net/bootp.h | 2 +-
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net/dns.h | 2 +-
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net/nfs.h | 2 +-
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net/sntp.h | 2 +-
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5 files changed, 11 insertions(+), 11 deletions(-)
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--- a/include/net.h
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+++ b/include/net.h
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@@ -203,7 +203,7 @@ struct ethernet_hdr {
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uchar et_dest[6]; /* Destination node */
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uchar et_src[6]; /* Source node */
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ushort et_protlen; /* Protocol or length */
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-};
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+} __attribute__((packed));
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/* Ethernet header size */
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#define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr))
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@@ -219,7 +219,7 @@ struct e802_hdr {
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uchar et_snap2;
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uchar et_snap3;
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ushort et_prot; /* 802 protocol */
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-};
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+} __attribute__((packed));
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/* 802 + SNAP + ethernet header size */
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#define E802_HDR_SIZE (sizeof(struct e802_hdr))
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@@ -233,7 +233,7 @@ struct vlan_ethernet_hdr {
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ushort vet_vlan_type; /* PROT_VLAN */
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ushort vet_tag; /* TAG of VLAN */
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ushort vet_type; /* protocol type */
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-};
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+} __attribute__((packed));
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/* VLAN Ethernet header size */
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#define VLAN_ETHER_HDR_SIZE (sizeof(struct vlan_ethernet_hdr))
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@@ -260,7 +260,7 @@ struct ip_hdr {
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ushort ip_sum; /* checksum */
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IPaddr_t ip_src; /* Source IP address */
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IPaddr_t ip_dst; /* Destination IP address */
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-};
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+} __attribute__((packed));
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#define IP_OFFS 0x1fff /* ip offset *= 8 */
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#define IP_FLAGS 0xe000 /* first 3 bits */
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@@ -288,7 +288,7 @@ struct ip_udp_hdr {
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ushort udp_dst; /* UDP destination port */
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ushort udp_len; /* Length of UDP packet */
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ushort udp_xsum; /* Checksum */
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-};
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+} __attribute__((packed));
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#define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr))
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#define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE)
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@@ -327,7 +327,7 @@ struct arp_hdr {
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uchar ar_tha[]; /* Target hardware address */
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uchar ar_tpa[]; /* Target protocol address */
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#endif /* 0 */
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-};
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+} __attribute__((packed));
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#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
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@@ -362,7 +362,7 @@ struct icmp_hdr {
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} frag;
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uchar data[0];
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} un;
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-};
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+} __attribute__((packed));
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#define ICMP_HDR_SIZE (sizeof(struct icmp_hdr))
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#define IP_ICMP_HDR_SIZE (IP_HDR_SIZE + ICMP_HDR_SIZE)
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--- a/net/bootp.h
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+++ b/net/bootp.h
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@@ -49,7 +49,7 @@ struct Bootp_t {
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char bp_sname[64]; /* Server host name */
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char bp_file[128]; /* Boot file name */
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char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */
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-};
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+} __attribute__((packed));
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#define BOOTP_HDR_SIZE sizeof(struct Bootp_t)
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--- a/net/dns.h
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+++ b/net/dns.h
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@@ -29,7 +29,7 @@ struct header {
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uint16_t nauth; /* Authority PRs */
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uint16_t nother; /* Other PRs */
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unsigned char data[1]; /* Data, variable length */
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-};
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+} __attribute__((packed));
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extern void DnsStart(void); /* Begin DNS */
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--- a/net/sntp.h
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+++ b/net/sntp.h
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@@ -51,7 +51,7 @@ struct sntp_pkt_t {
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unsigned long long originate_timestamp;
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unsigned long long receive_timestamp;
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unsigned long long transmit_timestamp;
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-};
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+} __attribute__((packed));
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extern void SntpStart(void); /* Begin SNTP */
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--- a/net/nfs.h
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+++ b/net/nfs.h
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@@ -68,7 +68,7 @@ struct rpc_t {
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uint32_t data[19];
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} reply;
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} u;
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-};
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+} __attribute__((packed));
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extern void NfsStart(void); /* Begin NFS */
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