Provide leading padding to allow pushing a value to a miniflow where
the value is not aligned to 64 bytes and no value has already been
pushed to the same word.
This will be used by a follow-up patch to allow layer 3 packet - that is
packets without an ethernet header - to be represented in flows.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jarno Rajahalme <jarno@ovn.org>
+#define miniflow_pad_from_64_(MF, OFS) \
+{ \
+ MINIFLOW_ASSERT(MF.data < MF.end); \
+ \
+ MINIFLOW_ASSERT((OFS) % 8 != 0); \
+ miniflow_set_map(MF, OFS / 8); \
+ \
+ memset((uint8_t *)MF.data, 0, (OFS) % 8); \
+}
+
#define miniflow_push_be16_(MF, OFS, VALUE) \
miniflow_push_uint16_(MF, OFS, (OVS_FORCE uint16_t)VALUE);
#define miniflow_push_be16_(MF, OFS, VALUE) \
miniflow_push_uint16_(MF, OFS, (OVS_FORCE uint16_t)VALUE);
#define miniflow_pad_to_64(MF, FIELD) \
miniflow_pad_to_64_(MF, OFFSETOFEND(struct flow, FIELD))
#define miniflow_pad_to_64(MF, FIELD) \
miniflow_pad_to_64_(MF, OFFSETOFEND(struct flow, FIELD))
+#define miniflow_pad_from_64(MF, FIELD) \
+ miniflow_pad_from_64_(MF, offsetof(struct flow, FIELD))
+
#define miniflow_push_words(MF, FIELD, VALUEP, N_WORDS) \
miniflow_push_words_(MF, offsetof(struct flow, FIELD), VALUEP, N_WORDS)
#define miniflow_push_words(MF, FIELD, VALUEP, N_WORDS) \
miniflow_push_words_(MF, offsetof(struct flow, FIELD), VALUEP, N_WORDS)