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net: initial AF_XDP skeleton
Buildable skeleton of AF_XDP without any functionality. Just what it takes to register a new address family. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Björn Töpel
Alexei Starovoitov
parent
03f5781be2
commit
68e8b849b2
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@ -15424,6 +15424,14 @@ T: git git://linuxtv.org/media_tree.git
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S: Maintained
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F: drivers/media/tuners/tuner-xc2028.*
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XDP SOCKETS (AF_XDP)
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M: Björn Töpel <bjorn.topel@intel.com>
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M: Magnus Karlsson <magnus.karlsson@intel.com>
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L: netdev@vger.kernel.org
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S: Maintained
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F: kernel/bpf/xskmap.c
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F: net/xdp/
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XEN BLOCK SUBSYSTEM
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M: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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M: Roger Pau Monné <roger.pau@citrix.com>
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@ -207,8 +207,9 @@ struct ucred {
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* PF_SMC protocol family that
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* reuses AF_INET address family
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*/
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#define AF_XDP 44 /* XDP sockets */
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#define AF_MAX 44 /* For now.. */
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#define AF_MAX 45 /* For now.. */
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/* Protocol families, same as address families. */
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#define PF_UNSPEC AF_UNSPEC
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@ -257,6 +258,7 @@ struct ucred {
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#define PF_KCM AF_KCM
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#define PF_QIPCRTR AF_QIPCRTR
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#define PF_SMC AF_SMC
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#define PF_XDP AF_XDP
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#define PF_MAX AF_MAX
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/* Maximum queue length specifiable by listen. */
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@ -338,6 +340,7 @@ struct ucred {
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#define SOL_NFC 280
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#define SOL_KCM 281
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#define SOL_TLS 282
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#define SOL_XDP 283
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/* IPX options */
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#define IPX_TYPE 1
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@ -59,6 +59,7 @@ source "net/tls/Kconfig"
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source "net/xfrm/Kconfig"
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source "net/iucv/Kconfig"
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source "net/smc/Kconfig"
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source "net/xdp/Kconfig"
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config INET
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bool "TCP/IP networking"
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@ -226,7 +226,8 @@ static struct lock_class_key af_family_kern_slock_keys[AF_MAX];
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x "AF_RXRPC" , x "AF_ISDN" , x "AF_PHONET" , \
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x "AF_IEEE802154", x "AF_CAIF" , x "AF_ALG" , \
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x "AF_NFC" , x "AF_VSOCK" , x "AF_KCM" , \
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x "AF_QIPCRTR", x "AF_SMC" , x "AF_MAX"
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x "AF_QIPCRTR", x "AF_SMC" , x "AF_XDP" , \
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x "AF_MAX"
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static const char *const af_family_key_strings[AF_MAX+1] = {
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_sock_locks("sk_lock-")
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@ -262,7 +263,8 @@ static const char *const af_family_rlock_key_strings[AF_MAX+1] = {
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"rlock-AF_RXRPC" , "rlock-AF_ISDN" , "rlock-AF_PHONET" ,
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"rlock-AF_IEEE802154", "rlock-AF_CAIF" , "rlock-AF_ALG" ,
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"rlock-AF_NFC" , "rlock-AF_VSOCK" , "rlock-AF_KCM" ,
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"rlock-AF_QIPCRTR", "rlock-AF_SMC" , "rlock-AF_MAX"
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"rlock-AF_QIPCRTR", "rlock-AF_SMC" , "rlock-AF_XDP" ,
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"rlock-AF_MAX"
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};
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static const char *const af_family_wlock_key_strings[AF_MAX+1] = {
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"wlock-AF_UNSPEC", "wlock-AF_UNIX" , "wlock-AF_INET" ,
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@ -279,7 +281,8 @@ static const char *const af_family_wlock_key_strings[AF_MAX+1] = {
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"wlock-AF_RXRPC" , "wlock-AF_ISDN" , "wlock-AF_PHONET" ,
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"wlock-AF_IEEE802154", "wlock-AF_CAIF" , "wlock-AF_ALG" ,
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"wlock-AF_NFC" , "wlock-AF_VSOCK" , "wlock-AF_KCM" ,
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"wlock-AF_QIPCRTR", "wlock-AF_SMC" , "wlock-AF_MAX"
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"wlock-AF_QIPCRTR", "wlock-AF_SMC" , "wlock-AF_XDP" ,
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"wlock-AF_MAX"
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};
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static const char *const af_family_elock_key_strings[AF_MAX+1] = {
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"elock-AF_UNSPEC", "elock-AF_UNIX" , "elock-AF_INET" ,
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@ -296,7 +299,8 @@ static const char *const af_family_elock_key_strings[AF_MAX+1] = {
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"elock-AF_RXRPC" , "elock-AF_ISDN" , "elock-AF_PHONET" ,
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"elock-AF_IEEE802154", "elock-AF_CAIF" , "elock-AF_ALG" ,
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"elock-AF_NFC" , "elock-AF_VSOCK" , "elock-AF_KCM" ,
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"elock-AF_QIPCRTR", "elock-AF_SMC" , "elock-AF_MAX"
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"elock-AF_QIPCRTR", "elock-AF_SMC" , "elock-AF_XDP" ,
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"elock-AF_MAX"
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};
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/*
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7
net/xdp/Kconfig
Normal file
7
net/xdp/Kconfig
Normal file
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@ -0,0 +1,7 @@
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config XDP_SOCKETS
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bool "XDP sockets"
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depends on BPF_SYSCALL
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default n
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help
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XDP sockets allows a channel between XDP programs and
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userspace applications.
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@ -1471,7 +1471,9 @@ static inline u16 socket_type_to_security_class(int family, int type, int protoc
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return SECCLASS_QIPCRTR_SOCKET;
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case PF_SMC:
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return SECCLASS_SMC_SOCKET;
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#if PF_MAX > 44
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case PF_XDP:
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return SECCLASS_XDP_SOCKET;
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#if PF_MAX > 45
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#error New address family defined, please update this function.
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#endif
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}
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@ -240,9 +240,11 @@ struct security_class_mapping secclass_map[] = {
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{ "manage_subnet", NULL } },
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{ "bpf",
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{"map_create", "map_read", "map_write", "prog_load", "prog_run"} },
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{ "xdp_socket",
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{ COMMON_SOCK_PERMS, NULL } },
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{ NULL }
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};
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#if PF_MAX > 44
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#if PF_MAX > 45
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#error New address family defined, please update secclass_map.
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#endif
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