[PATCH iproute2-next 1/1] tc: fix bugs for tcp_flags and ip_attr hex output

[Keara Leibovitz]

Fix hex output for both the ip_attr and tcp_flags print functions.

Sample usage:

$ $TC qdisc add dev lo ingress
$ $TC filter add dev lo parent ffff: prio 3 proto ip flower ip_tos 0x8/32
$ $TC fitler add dev lo parent ffff: prio 5 proto ip flower ip_proto tcp \
        tcp_flags 0x909/f00

$ $TC filter show dev lo parent ffff:

filter protocol ip pref 3 flower chain 0 
filter protocol ip pref 3 flower chain 0 handle 0x1 
  eth_type ipv4
  ip_tos 0x8/32
  not_in_hw
filter protocol ip pref 5 flower chain 0 
filter protocol ip pref 5 flower chain 0 handle 0x1 
  eth_type ipv4
  ip_proto tcp
  tcp_flags 0x909/f00
  not_in_hw

$ $TC -j filter show dev lo parent ffff:

[{
    "protocol":"ip",
    "pref":3,
    "kind":"flower",
    "chain":0
},{
    "protocol":"ip", 
    "pref":3,
    "kind":"flower",
    "chain":0,
    "options": {
        "handle":1,
        "keys": {
            "eth_type":"ipv4",
            "ip_tos":"0x8/32"
    },
    "not_in_hw":true
    }
},{
    "protocol":"ip",
    "pref":5,
    "kind":"flower",
    "chain":0
},{
    "protocol":"ip",
    "pref":5,
    "kind":"flower",
    "chain":0,
    "options": {
        "handle":1,
        "keys": {
            "eth_type":"ipv4",
            "ip_proto":"tcp",
            "tcp_flags":"0x909/f00"
        },
        "not_in_hw":true
    }
}]

Signed-off-by: Keara Leibovitz <kl...@mojatatu.com>
---
 tc/f_flower.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/tc/f_flower.c b/tc/f_flower.c
index 9a3fd7751630..59e5f572c542 100644
--- a/tc/f_flower.c
+++ b/tc/f_flower.c
@@ -1189,7 +1189,7 @@ static void flower_print_ip_proto(__u8 *p_ip_proto,
        *p_ip_proto = ip_proto;
 }
 
-static void flower_print_ip_attr(char *name, struct rtattr *key_attr,
+static void flower_print_ip_attr(const char *name, struct rtattr *key_attr,
                                 struct rtattr *mask_attr)
 {
        SPRINT_BUF(namefrm);
@@ -1199,11 +1199,12 @@ static void flower_print_ip_attr(char *name, struct 
rtattr *key_attr,
        if (!key_attr)
                return;
 
-       done = sprintf(out, "%x", rta_getattr_u8(key_attr));
+       done = sprintf(out, "0x%x", rta_getattr_u8(key_attr));
        if (mask_attr)
                sprintf(out + done, "/%x", rta_getattr_u8(mask_attr));
 
-       sprintf(namefrm, "\n  %s %%s", name);
+       print_string(PRINT_FP, NULL, "%s  ", _SL_);
+       sprintf(namefrm, "%s %%s", name);
        print_string(PRINT_ANY, name, namefrm, out);
 }
 
@@ -1308,7 +1309,7 @@ static void flower_print_port(char *name, struct rtattr 
*attr)
        print_hu(PRINT_ANY, name, namefrm, rta_getattr_be16(attr));
 }
 
-static void flower_print_tcp_flags(char *name, struct rtattr *flags_attr,
+static void flower_print_tcp_flags(const char *name, struct rtattr *flags_attr,
                                   struct rtattr *mask_attr)
 {
        SPRINT_BUF(namefrm);
@@ -1318,11 +1319,12 @@ static void flower_print_tcp_flags(char *name, struct 
rtattr *flags_attr,
        if (!flags_attr)
                return;
 
-       done = sprintf(out, "%x", rta_getattr_be16(flags_attr));
+       done = sprintf(out, "0x%x", rta_getattr_be16(flags_attr));
        if (mask_attr)
-               sprintf(out + done, "%x", rta_getattr_be16(flags_attr));
+               sprintf(out + done, "/%x", rta_getattr_be16(mask_attr));
 
-       sprintf(namefrm, "\n  %s %%s", name);
+       print_string(PRINT_FP, NULL, "%s  ", _SL_);
+       sprintf(namefrm, "%s %%s", name);
        print_string(PRINT_ANY, name, namefrm, out);
 }
 
-- 
2.7.4