net: drop capability from protocol definitions

struct can_proto had a capability field which wasn't ever used.  It is
dropped entirely.

struct inet_protosw had a capability field which can be more clearly
expressed in the code by just checking if sock->type = SOCK_RAW.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 1 insertions, 5 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 9105b25defe5..1b3889356599 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -158,7 +158,7 @@ lookup_protocol:
         }
 
         err = -EPERM;
-        if (answer->capability > 0 && !capable(answer->capability))
+        if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
                 goto out_rcu_unlock;
 
         sock->ops = answer->ops;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index cb834ab7f071..818ef21ba76d 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1336,7 +1336,6 @@ static struct inet_protosw rawv6_protosw = {
         .protocol       = IPPROTO_IP,   /* wild card */
         .prot           = &rawv6_prot,
         .ops            = &inet6_sockraw_ops,
-        .capability     = CAP_NET_RAW,
         .no_check       = UDP_CSUM_DEFAULT,
         .flags          = INET_PROTOSW_REUSE,
 };
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 34925f089e07..696a22f034e8 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -2112,7 +2112,6 @@ static struct inet_protosw tcpv6_protosw = {
         .protocol       =       IPPROTO_TCP,
         .prot           =       &tcpv6_prot,
         .ops            =       &inet6_stream_ops,
-        .capability     =       -1,
         .no_check       =       0,
         .flags          =       INET_PROTOSW_PERMANENT |
                                 INET_PROTOSW_ICSK,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index d3b59d73f507..bbe2f3e445fc 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1286,7 +1286,6 @@ static struct inet_protosw udpv6_protosw = {
         .protocol =  IPPROTO_UDP,
         .prot =      &udpv6_prot,
         .ops =       &inet6_dgram_ops,
-        .capability =-1,
         .no_check =  UDP_CSUM_DEFAULT,
         .flags =     INET_PROTOSW_PERMANENT,
 };
diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c
index d737a27ee010..6ea6938919e6 100644
--- a/net/ipv6/udplite.c
+++ b/net/ipv6/udplite.c
@@ -62,7 +62,6 @@ static struct inet_protosw udplite6_protosw = {
         .protocol       = IPPROTO_UDPLITE,
         .prot           = &udplitev6_prot,
         .ops            = &inet6_dgram_ops,
-        .capability     = -1,
         .no_check       = 0,
         .flags          = INET_PROTOSW_PERMANENT,
 };