From 33a29b51c9fb56abd94d751dd3a51b84b82c8379 Mon Sep 17 00:00:00 2001
From: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Date: Sat, 12 Jul 2014 15:47:07 +0200
Subject: [PATCH] linux-user: handle AF_PACKET sockaddrs in
 target_to_host_sockaddr

Implement conversion of the AF_PACKET sockaddr subtype
in target_to_host_sockaddr.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
---
 linux-user/syscall.c      |  7 +++++++
 linux-user/syscall_defs.h | 10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index dcf13238e5..7163ade3f3 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1140,6 +1140,13 @@ static inline abi_long target_to_host_sockaddr(struct sockaddr *addr,
 
     memcpy(addr, target_saddr, len);
     addr->sa_family = sa_family;
+    if (sa_family == AF_PACKET) {
+	struct target_sockaddr_ll *lladdr;
+
+	lladdr = (struct target_sockaddr_ll *)addr;
+	lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
+	lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
+    }
     unlock_user(target_saddr, target_addr, 0);
 
     return 0;
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 856302780f..c9e6323905 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -121,6 +121,16 @@ struct target_sockaddr {
     uint8_t sa_data[14];
 };
 
+struct target_sockaddr_ll {
+    uint16_t sll_family;   /* Always AF_PACKET */
+    uint16_t sll_protocol; /* Physical layer protocol */
+    int      sll_ifindex;  /* Interface number */
+    uint16_t sll_hatype;   /* ARP hardware type */
+    uint8_t  sll_pkttype;  /* Packet type */
+    uint8_t  sll_halen;    /* Length of address */
+    uint8_t  sll_addr[8];  /* Physical layer address */
+};
+
 struct target_sock_filter {
     abi_ushort code;
     uint8_t jt;
-- 
2.30.2