[PATCH net-next v4 2/7] bonding: Adding extra_len field to struct bond_opt_value.
From: David Wilder <hidden>
Date: 2025-06-27 20:19:45
Subsystem:
bonding driver, networking [general], the rest · Maintainers:
Jay Vosburgh, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Used to record the size of the extra array. __bond_opt_init() is updated to set extra_len. BOND_OPT_EXTRA_MAXLEN is increased from 16 to 64. This is needed for the extended arp_ip_target option. The ip command will now pass a variable length value when setting arp_ip_target. Signed-off-by: David Wilder <redacted> --- include/net/bond_options.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/include/net/bond_options.h b/include/net/bond_options.h
index 0a7d690cb005..d5d59081a9ce 100644
--- a/include/net/bond_options.h
+++ b/include/net/bond_options.h@@ -85,14 +85,15 @@ enum { * - if value != ULLONG_MAX -> parse value * - if string != NULL -> parse string * - if the opt is RAW data and length less than maxlen, - * copy the data to extra storage + * copy the data to extra storage, extra_len is set to the size of data copied. */ -#define BOND_OPT_EXTRA_MAXLEN 16 +#define BOND_OPT_EXTRA_MAXLEN 64 struct bond_opt_value { char *string; u64 value; u32 flags; + u16 extra_len; union { char extra[BOND_OPT_EXTRA_MAXLEN]; struct net_device *slave_dev;
@@ -167,8 +168,10 @@ static inline void __bond_opt_init(struct bond_opt_value *optval, else if (string) optval->string = string; - if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN) + if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN) { memcpy(optval->extra, extra, extra_len); + optval->extra_len = extra_len; + } } #define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value, NULL, 0) #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX, NULL, 0)
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2.43.5