[B.A.T.M.A.N.] [PATCHv6 7/7] batman-adv: Distributed ARP Table - add compile option
From: Antonio Quartulli <hidden>
Date: 2012-02-18 16:38:53
Subsystem:
kernel build + files below scripts/ (unless maintained elsewhere), the rest · Maintainers:
Nathan Chancellor, Nicolas Schier, Linus Torvalds
This patch makes it possible to decide whether to include DAT within the batman-adv binary or not. It is extremely useful when the user wants to reduce the size of the resulting module by cutting off any not needed feature. Signed-off-by: Antonio Quartulli <redacted> --- Makefile | 2 ++ Makefile.kbuild | 2 +- README.external | 1 + distributed-arp-table.h | 15 +++++++++++++++ gen-compat-autoconf.sh | 1 + send.c | 2 -- types.h | 8 ++++++++ 7 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index 08f8c39..ac84fba 100644
--- a/Makefile
+++ b/Makefile@@ -23,6 +23,8 @@ export CONFIG_BATMAN_ADV_DEBUG=n # B.A.T.M.A.N. bridge loop avoidance: export CONFIG_BATMAN_ADV_BLA=y +# B.A.T.M.A.N. distributed ARP table: +export CONFIG_BATMAN_ADV_DAT=y PWD:=$(shell pwd) KERNELPATH ?= /lib/modules/$(shell uname -r)/build
diff --git a/Makefile.kbuild b/Makefile.kbuild
index 84955b3..ad002cd 100644
--- a/Makefile.kbuild
+++ b/Makefile.kbuild@@ -24,7 +24,7 @@ batman-adv-y += bat_iv_ogm.o batman-adv-y += bat_sysfs.o batman-adv-y += bitarray.o batman-adv-$(CONFIG_BATMAN_ADV_BLA) += bridge_loop_avoidance.o -batman-adv-y += distributed-arp-table.o +batman-adv-$(CONFIG_BATMAN_ADV_DAT) += distributed-arp-table.o batman-adv-y += gateway_client.o batman-adv-y += gateway_common.o batman-adv-y += hard-interface.o
diff --git a/README.external b/README.external
index 1eff0f9..95a7eb4 100644
--- a/README.external
+++ b/README.external@@ -37,6 +37,7 @@ module). Available options and their possible values are * CONFIG_BATMAN_ADV_DEBUG=[y|n*] (B.A.T.M.A.N. debugging) * CONFIG_BATMAN_ADV_BLA=[y*|n] (B.A.T.M.A.N. bridge loop avoidance) + * CONFIG_BATMAN_ADV_DAT=[y*|n] (B.A.T.M.A.N. Distributed ARP Table) e.g., debugging can be enabled by
diff --git a/distributed-arp-table.h b/distributed-arp-table.h
index bf4390d..2e37e3f 100644
--- a/distributed-arp-table.h
+++ b/distributed-arp-table.h@@ -22,6 +22,8 @@ #ifndef _NET_BATMAN_ADV_ARP_H_ #define _NET_BATMAN_ADV_ARP_H_ +#ifdef CONFIG_BATMAN_ADV_DAT + #include "types.h" #include "originator.h"
@@ -84,4 +86,17 @@ static inline void dat_init_own_dht_addr(struct bat_priv *bat_priv, DAT_ADDR_MAX); } +#else + +#define dat_snoop_outgoing_arp_request(...) (0) +#define dat_snoop_incoming_arp_request(...) (0) +#define dat_snoop_outgoing_arp_reply(...) +#define dat_snoop_incoming_arp_reply(...) (0) +#define arp_drop_broadcast_packet(...) (0) +#define arp_change_timeout(...) +#define dat_init_orig_node_dht_addr(...) +#define dat_init_own_dht_addr(...) + +#endif /* CONFIG_BATMAN_ADV_DAT */ + #endif /* _NET_BATMAN_ADV_ARP_H_ */
diff --git a/gen-compat-autoconf.sh b/gen-compat-autoconf.sh
index 7cf621b..33de95d 100755
--- a/gen-compat-autoconf.sh
+++ b/gen-compat-autoconf.sh@@ -38,6 +38,7 @@ gen_config() { # write config variables gen_config 'CONFIG_BATMAN_ADV_DEBUG' ${CONFIG_BATMAN_ADV_DEBUG:="n"} >> "${TMP}" gen_config 'CONFIG_BATMAN_ADV_BLA' ${CONFIG_BATMAN_ADV_BLA:="y"} >> "${TMP}" +gen_config 'CONFIG_BATMAN_ADV_DAT' ${CONFIG_BATMAN_ADV_DAT:="n"} >> "${TMP}" # only regenerate compat-autoconf.h when config was changed diff "${TMP}" "${TARGET}" > /dev/null 2>&1 || cp "${TMP}" "${TARGET}"
diff --git a/send.c b/send.c
index 8bd31bb..65c13b2 100644
--- a/send.c
+++ b/send.c@@ -30,8 +30,6 @@ #include "gateway_common.h" #include "originator.h" -#include <net/arp.h> - static void send_outstanding_bcast_packet(struct work_struct *work); /* send out an already prepared packet to the given address via the
diff --git a/types.h b/types.h
index 210ee3e..6a3cc88 100644
--- a/types.h
+++ b/types.h@@ -27,6 +27,8 @@ #include "packet.h" #include "bitarray.h" +#ifdef CONFIG_BATMAN_ADV_DAT + /* * dat_addr_t is the type used for all DHT addresses. If it is changed, * DAT_ADDR_MAX is changed as well.
@@ -35,6 +37,8 @@ */ #define dat_addr_t uint16_t +#endif /* CONFIG_BATMAN_ADV_DAT */ + #define BAT_HEADER_LEN (ETH_HLEN + \ ((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \ sizeof(struct unicast_packet) : \
@@ -75,7 +79,9 @@ struct hard_iface { struct orig_node { uint8_t orig[ETH_ALEN]; uint8_t primary_addr[ETH_ALEN]; +#ifdef CONFIG_BATMAN_ADV_DAT dat_addr_t dht_addr; +#endif struct neigh_node __rcu *router; /* rcu protected pointer */ unsigned long *bcast_own; uint8_t *bcast_own_sum;
@@ -230,7 +236,9 @@ struct bat_priv { struct gw_node __rcu *curr_gw; /* rcu protected pointer */ atomic_t gw_reselect; struct hard_iface __rcu *primary_if; /* rcu protected pointer */ +#ifdef CONFIG_BATMAN_ADV_DAT dat_addr_t dht_addr; +#endif struct vis_info *my_vis_info; struct bat_algo_ops *bat_algo_ops; };
--
1.7.3.4