From: David Howells dhowells@redhat.com

count_real_packets() in batman-adv assumes char is signed, and returns -1 through it:

net/batman-adv/routing.c: In function 'receive_bat_packet': net/batman-adv/routing.c:739: warning: comparison is always false due to limited range of data type

Use int instead.

Signed-off-by: David Howells dhowells@redhat.com cc: Marek Lindner lindner_marek@yahoo.de cc: Simon Wunderlich siwu@hrz.tu-chemnitz.de cc: Sven Eckelmann sven@narfation.org cc: b.a.t.m.a.n@lists.open-mesh.org cc: netdev@vger.kernel.org Signed-off-by: Sven Eckelmann sven@narfation.org --- bitarray.c | 4 ++-- bitarray.h | 2 +- routing.c | 8 ++++---- 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/bitarray.c b/bitarray.c index 700ee4f..3659a25 100644 --- a/bitarray.c +++ b/bitarray.c @@ -26,8 +26,8 @@

/* returns true if the corresponding bit in the given seq_bits indicates true * and curr_seqno is within range of last_seqno */ -uint8_t get_bit_status(const unsigned long *seq_bits, uint32_t last_seqno, - uint32_t curr_seqno) +int get_bit_status(const unsigned long *seq_bits, uint32_t last_seqno, + uint32_t curr_seqno) { int32_t diff, word_offset, word_num;

diff --git a/bitarray.h b/bitarray.h index e32eb2d..9fcdbdf 100644 --- a/bitarray.h +++ b/bitarray.h @@ -26,7 +26,7 @@

/* returns true if the corresponding bit in the given seq_bits indicates true * and curr_seqno is within range of last_seqno */ -uint8_t get_bit_status(const unsigned long *seq_bits, uint32_t last_seqno, +int get_bit_status(const unsigned long *seq_bits, uint32_t last_seqno, uint32_t curr_seqno);

/* turn corresponding bit on, so we can remember that we got the packet */ diff --git a/routing.c b/routing.c index 7ca4b42..2e037e3 100644 --- a/routing.c +++ b/routing.c @@ -381,7 +381,7 @@ static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node, const struct ethhdr *ethhdr, const struct batman_packet *batman_packet, struct hard_iface *if_incoming, - const unsigned char *tt_buff, char is_duplicate) + const unsigned char *tt_buff, int is_duplicate) { struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; struct neigh_node *router = NULL; @@ -548,7 +548,7 @@ static int window_protected(struct bat_priv *bat_priv, * -1 the packet is old and has been received while the seqno window * was protected. Caller should drop it. */ -static char count_real_packets(const struct ethhdr *ethhdr, +static int count_real_packets(const struct ethhdr *ethhdr, const struct batman_packet *batman_packet, const struct hard_iface *if_incoming) { @@ -556,7 +556,7 @@ static char count_real_packets(const struct ethhdr *ethhdr, struct orig_node *orig_node; struct neigh_node *tmp_neigh_node; struct hlist_node *node; - char is_duplicate = 0; + int is_duplicate = 0; int32_t seq_diff; int need_update = 0; int set_mark, ret = -1; @@ -625,7 +625,7 @@ void receive_bat_packet(const struct ethhdr *ethhdr, char has_directlink_flag; char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; char is_broadcast = 0, is_bidirectional, is_single_hop_neigh; - char is_duplicate; + int is_duplicate; uint32_t if_incoming_seqno;

/* Silently drop when the batman packet is actually not a

char was used in different places to store information without really using the characteristics of that data type or by ignoring the fact that char has not a well defined signedness.

Signed-off-by: Sven Eckelmann sven@narfation.org --- aggregation.c | 2 +- aggregation.h | 2 +- bitarray.c | 4 ++-- bitarray.h | 4 ++-- gateway_client.c | 2 +- gateway_common.c | 6 +++--- main.h | 2 +- routing.c | 8 ++++---- send.c | 6 +++--- send.h | 2 +- soft-interface.c | 2 +- 11 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/aggregation.c b/aggregation.c index ede0a56..c583e04 100644 --- a/aggregation.c +++ b/aggregation.c @@ -190,7 +190,7 @@ static void aggregate(struct forw_packet *forw_packet_aggr,

void add_bat_packet_to_list(struct bat_priv *bat_priv, unsigned char *packet_buff, int packet_len, - struct hard_iface *if_incoming, char own_packet, + struct hard_iface *if_incoming, int own_packet, unsigned long send_time) { /** diff --git a/aggregation.h b/aggregation.h index 2b7b852..216337b 100644 --- a/aggregation.h +++ b/aggregation.h @@ -37,7 +37,7 @@ static inline int aggregated_packet(int buff_pos, int packet_len,

void add_bat_packet_to_list(struct bat_priv *bat_priv, unsigned char *packet_buff, int packet_len, - struct hard_iface *if_incoming, char own_packet, + struct hard_iface *if_incoming, int own_packet, unsigned long send_time); void receive_aggr_bat_packet(const struct ethhdr *ethhdr, unsigned char *packet_buff, int packet_len, diff --git a/bitarray.c b/bitarray.c index 3659a25..c1f4bfc 100644 --- a/bitarray.c +++ b/bitarray.c @@ -127,8 +127,8 @@ static void bit_reset_window(unsigned long *seq_bits) * 1 if the window was moved (either new or very old) * 0 if the window was not moved/shifted. */ -char bit_get_packet(void *priv, unsigned long *seq_bits, - int32_t seq_num_diff, int8_t set_mark) +int bit_get_packet(void *priv, unsigned long *seq_bits, + int32_t seq_num_diff, int set_mark) { struct bat_priv *bat_priv = priv;

diff --git a/bitarray.h b/bitarray.h index 9fcdbdf..7051f1f 100644 --- a/bitarray.h +++ b/bitarray.h @@ -35,8 +35,8 @@ void bit_mark(unsigned long *seq_bits, int32_t n);

/* receive and process one packet, returns 1 if received seq_num is considered * new, 0 if old */ -char bit_get_packet(void *priv, unsigned long *seq_bits, - int32_t seq_num_diff, int8_t set_mark); +int bit_get_packet(void *priv, unsigned long *seq_bits, + int32_t seq_num_diff, int set_mark);

/* count the hamming weight, how many good packets did we receive? */ int bit_packet_count(const unsigned long *seq_bits); diff --git a/gateway_client.c b/gateway_client.c index d90463a..8b25b52 100644 --- a/gateway_client.c +++ b/gateway_client.c @@ -396,7 +396,7 @@ void gw_node_purge(struct bat_priv *bat_priv) struct gw_node *gw_node, *curr_gw; struct hlist_node *node, *node_tmp; unsigned long timeout = 2 * PURGE_TIMEOUT * HZ; - char do_deselect = 0; + int do_deselect = 0;

curr_gw = gw_get_selected_gw_node(bat_priv);

diff --git a/gateway_common.c b/gateway_common.c index e74307b..18661af 100644 --- a/gateway_common.c +++ b/gateway_common.c @@ -61,9 +61,9 @@ static void kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class) /* returns the up and downspeeds in kbit, calculated from the class */ void gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up) { - char sbit = (gw_srv_class & 0x80) >> 7; - char dpart = (gw_srv_class & 0x78) >> 3; - char upart = (gw_srv_class & 0x07); + int sbit = (gw_srv_class & 0x80) >> 7; + int dpart = (gw_srv_class & 0x78) >> 3; + int upart = (gw_srv_class & 0x07);

if (!gw_srv_class) { *down = 0; diff --git a/main.h b/main.h index 059866c..f3fe9f4 100644 --- a/main.h +++ b/main.h @@ -174,7 +174,7 @@ int debug_log(struct bat_priv *bat_priv, const char *fmt, ...) __printf(2, 3); while (0) #else /* !CONFIG_BATMAN_ADV_DEBUG */ __printf(3, 4) -static inline void bat_dbg(char type __always_unused, +static inline void bat_dbg(int type __always_unused, struct bat_priv *bat_priv __always_unused, const char *fmt __always_unused, ...) { diff --git a/routing.c b/routing.c index 2e037e3..d8999a3 100644 --- a/routing.c +++ b/routing.c @@ -184,7 +184,7 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *neigh_node = NULL, *tmp_neigh_node; struct hlist_node *node; - unsigned char total_count; + uint8_t total_count; uint8_t orig_eq_count, neigh_rq_count, tq_own; int tq_asym_penalty, ret = 0;

@@ -622,9 +622,9 @@ void receive_bat_packet(const struct ethhdr *ethhdr, struct orig_node *orig_neigh_node, *orig_node; struct neigh_node *router = NULL, *router_router = NULL; struct neigh_node *orig_neigh_router = NULL; - char has_directlink_flag; - char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; - char is_broadcast = 0, is_bidirectional, is_single_hop_neigh; + int has_directlink_flag; + int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; + int is_broadcast = 0, is_bidirectional, is_single_hop_neigh; int is_duplicate; uint32_t if_incoming_seqno;

diff --git a/send.c b/send.c index a150c7c..7a2f082 100644 --- a/send.c +++ b/send.c @@ -165,7 +165,7 @@ static void send_packet(struct forw_packet *forw_packet) struct bat_priv *bat_priv; struct batman_packet *batman_packet = (struct batman_packet *)(forw_packet->skb->data); - unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0); + int directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);

if (!forw_packet->if_incoming) { pr_err("Error - can't forward packet: incoming iface not " @@ -352,12 +352,12 @@ void schedule_own_packet(struct hard_iface *hard_iface) void schedule_forward_packet(struct orig_node *orig_node, const struct ethhdr *ethhdr, struct batman_packet *batman_packet, - uint8_t directlink, + int directlink, struct hard_iface *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *router; - unsigned char in_tq, in_ttl, tq_avg = 0; + uint8_t in_tq, in_ttl, tq_avg = 0; unsigned long send_time; uint8_t tt_num_changes;

diff --git a/send.h b/send.h index bd5ab77..633224a 100644 --- a/send.h +++ b/send.h @@ -28,7 +28,7 @@ void schedule_own_packet(struct hard_iface *hard_iface); void schedule_forward_packet(struct orig_node *orig_node, const struct ethhdr *ethhdr, struct batman_packet *batman_packet, - uint8_t directlink, + int directlink, struct hard_iface *if_outgoing); int add_bcast_packet_to_list(struct bat_priv *bat_priv, const struct sk_buff *skb); diff --git a/soft-interface.c b/soft-interface.c index 7aeed0d..ab420ea 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -381,7 +381,7 @@ void softif_neigh_purge(struct bat_priv *bat_priv) struct softif_neigh *softif_neigh, *curr_softif_neigh; struct softif_neigh_vid *softif_neigh_vid; struct hlist_node *node, *node_tmp, *node_tmp2; - char do_deselect; + int do_deselect;

rcu_read_lock(); hlist_for_each_entry_rcu(softif_neigh_vid, node,